identify the main organs of the cardiovascular system

heart blood vessels (arteries, capillaries, veins)

list the four chambers of the heart plus their separating septa

right atria and left atria-interatrial setptum/ and left and right ventricles-interventricular septum

understand direction of blood flow in heart

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve

difference between pulmonary circuit and systematic circuit of blood

-Pulmonary circulation - carries blood from heart through lungs back to heart. Allows for exchange of gases w/in lungs where CO2 is exchanged for O2
- Systemic circulation - carries oxygenated blood from heart to tissues and organs of body and returns O2-poor/CO2-filled blood back to heart

describe pericardial sac and its functions

a cronical sac of fibrous tissue which surrounds the heart and the roots of the great blood vessels. also called the pericardium

-it encloses the pericardial cavity which contains pericardial fluid

what is pericardial cavity? is it air or fluid filled?

-the potential space formed between the two layers of the serous pericardium around the heart. contains fluid that acts to reduce surface tension and lubricate

be able to ID heart on a radiograph

direction of apex of heart

downward, forward and to the left

is base of heart posterior or anterior?

posterior

what tubular structures are posterior to base of the heart?

right atrium

list the three surfaces of the heart

sternocostal, pulmonary, and diaphramic

be able to label the borders of heart on a diagram

be able to label the atria, auricles, ventricles, IVC, SVC, ascending aorta and pulmonary trunk, and pulmonary veins on a diagram

understand the epicardium, myocardium, and endocardium

epicardium-inner pericardium and outer surface of the heart

myocardium-muscular wall of the heart.

endocardium-smooth membrane that lines the inside of the chambers of the heart and forms the surface of the valves

which three vessels open into the right atrium?

superior and inferior vena cava and coronary sinus

is there a wall between the right and left atrium?

the interatrial septum is the wall

where is fossa ovalis?

in the right atrium

where are the sino-atrial nodes and atrio-ventricular (AV) nodes situated?

which ventricle does blood from the right atrium flow into?

blood flows from your right atrium into your right ventricle through the open tricuspid valve

through which valve does blood flow?

pulmonary valve

what is the common name for this valve?

pulmonic valve

what are trabeculae carnae? are they present in both the left and right ventricles?

rounded or irregular muscular columns which project from the inner surface of the right and left ventricles of the heart

-present in both the left and right ventricles

what is any one function of the moderator band?

act as a primary conduction path in to the free wall originating from the right bundle branch

what is the role of chordae tendinae and papillary muscles? (these are present in both ventricles)

The papillary muscles are muscles located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves (also known as the mitral and tricuspid valves) via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole

through which valve does blood from the right ventricle pass to get into the pulmonary trunk?

pulmonary valve

what is the destination of blood that leave the right ventricle?

flow to the lungs via the pulmonary artery

blood draining into the left atrium is draining from which organ?

Deoxygenated blood is drained from the left atrium through the oblique vein of the left atrium, which joins with the larger coronary sinus to return blood to the interior of the heart.

is this blood oxygenated or not?

left atrium receives the oxygenated blood

the left atrium is separated from the right atrium by what?

interatrial septum

what valve does blood from the left atrium pass through to get to the left ventricle? why is it called bicuspid

mitral valve-contains two cusps-allows the blood to flow from the left atrium to the left ventricle

does the left ventricle have a moderator band?

no the right ventricle

does the LV have papillary muscles, trabeculae carne and chordae tendinae?

yes

why is the left ventricular myocardium thicker than the right ventricular myocardium?

The myocardium is thinnest within the atria, as the atria fill largely through passive blood flow. The right ventricle myocardium is thicker than the atrial myocardium, as this muscle must pump all blood returning to the heart into the lungs for oxygenation.

through what valve does blood from the LV pass to get into the ascending aorta?

tricuspid valve

when do the sinuses of the semilunar valves fill with blood? is it in diastole or systole?

-diastole

when do the coronary arteries get their blood from the aortic semilunar sinuses? is it diastole or systole?

the heart receives autonomic nervous system fibers. the heart electrical system is capable of autonomous function. these nerves only modulate the hearts intrinsic electrical system

what are the two major arteries of the heart?

the coronary arteries and the circumflex artery

at what point do they branch off the aorta?

what part of the heart do they chiefly supply?

they supply the heart with oxygenated blood

label the right coronary, right marginal artery and posterior interventricular artery

label left corornary artery, anterior interventricular artery, circumflex artery and left marginal artery

which of the two supplies the major (2/3) part of the IVS

what is the corornary sinus? which heart chamber does it drain into?

receives blood from the coronary veins and empties into the right atrium of the heart

-drains into the right atrium

label veins p.17 and 18

what is the function of the cardiac conduction system?

send signals to the heart muscle causing it to contract

what structures make up the conduction system?

SA node , AV node, bundle of his, bundle branches, and purkinje fibers

what is systole? what is diastole?

systole-the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries

diastole-the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood

true/false-during systole only the left ventricle contracts

true

true/false-during systole the AV valves are wide open

true

what is auscultation? what are the auscultation points of the valves of the heart?

the action of listening to sounds from the heart, lungs, or other organs, typically with a stethoscope, as a part of medical diagnosis.

-aortic valve, pulmonic valve, tricuspid valve, and mitral valve

distinguish blood vessels from the pulmonary and systematic circuits

PULMONARY: blood vessels that carry blood to and from the lungs.

systematic:Freshly oxygenated blood leaving the lungs is returned to the left atrium and passes into the left ventricle which pumps it into the aorta.

list the 5 main types of blood vessels

1.arteries

2.arterioles

3.capillaries

4.venules

5.veins

what function defines an artery?

An artery is a vessel that carries blood away from the heart and toward other tissues and organs. Arteries are part of the circulatory system, which delivers oxygen and nutrients to every cell of the body.

what function defines a vein?

Veins are the blood vessels that carry deoxygenated blood from parts of our body back to the heart.

identify the main differences in anatomy of the various blood vessel types

-arteries and veins range in size from 10 mm to 0.1 mm (100 microns)

-arterioles and venules are 10 to 100 microns

-capillaries are less than 10 microns

what are the three layers in blood vessels larger than 100 microns in diameter

which layer of those listed above is found in capillaries?

papillary layer

why do you think smooth muscle is important in blood vessel walls?

It relaxes to allow more blood to flow to an area, and contracts to restrict the local blood flow.

what is vasa vasorum?

is a network of small blood vessels that supply the walls of large blood vessels, such as elastic arteries (aorta) and large veins (vena cava).

what structure is present in veins that is absent in arteries, arterioles and venules?

internal elastic membrane

why are valves important in veins?

they prevent backflow. the valves in the heart prevent backflow from the ventricles to the atria. and the valves in the veins prevent backflow because the blood pressure is lower in the veins than the arteries. Therefore helping the blood return to the heart again.

list one function of blood

supplies essential nutrients to cells

blood is what percent of body volume

about 7 percent of body weight

plasma is what percent of body volume...while cells are what percent of blood volume?

55 percent plasma and 45 percent blood cells

what is the difference between serum and plasma?

Serum is that part of blood which is similar in composition with plasma but exclude clotting factors of blood. Fibrinogen is a protein that is involved in blood coagulation

list one type of stain used in blood work

gram stain

what is the main component of RBCs

hemoglobin

what is the principal function of RBCs?

the transport of oxygen and carbon dioxide

each hemoglobin consists of 4 what and 4 what transporting carbon dioxide and oxygen respectively

4 subunits. 4 molecules

what is the difference between granulocytes and agranulocytes?

A granulocyte is a white blood cell that has granular cytoplasm. Agranulocytes are white blood cells that lack cytoplasmic granules. Name five types of leukocytes, and list the major functions of each type.

what is the difference between mononuclear and polymorphonuclear WBCs?

mono has one lobed nucleus and poly has more

which type of wbc is involved in cell mediation immunity antibody mediated immunity?

cell-mediated immunity

which type of wbc is very rare, has numerous purplish granules and is involved in mediation of allergic responses....it is?

neutrophils

this wbc has neutral granules, is the most common wbc (70%) and the first responder inflammatory response. it is?

this wbc has numerous reddish granules and is involved in parasitic infectins. it is ?

eosinophil

what is unique about avian RBCs?

lifespan 28 to 45 days

which blood component initiates clotting?

platelets

what is the pH of blood? does that mean it is near neutral, acidic or alkaline

A pH of 7 is neutral. The lower the pH, the more acidic the blood. A variety of factors affect blood pH including what is ingested, vomiting, diarrhea, lung function, endocrine function, kidney function, and urinary tract infection. The normal blood pH is tightly regulated between 7.35 and 7.45.

relative to water, does blood have higher or lower osmolarity?

lower

what is hematocrit? would your hematocrit increase if you moved from Charleston SC to Aspen CO? Aspen is a higher altitude

the ratio of the volume of red blood cells to the total volume of blood

list the three major proteins in blood

albumin, fibrinogen, and globulins

what is the difference between hematopoiesis and erythropoiesis?

Hematopoiesis the development of ALL cells in the blood including red blood cells (RBC) and all white blood cells, whereas erythropoiesis is on the process of RBC development.

what is the difference in red bone marrow distribution between adults and infants?

found in flat bone in infants and its restricted to flat bones in adults

t/f-all blood cells arise from the same stem cell

false

what protein is produced by the kidneys in response to decrease renal blood oxygen content?

erthropoietin

what are the three dietary requirments for adequate red blood cell synthesis?

what is the average life span of human RBCs

80 to 120 days

t/f-in RH positive person, the RBC do not carry RH agglutinogens

false

t/f-RH negative mother will have issues when she carries the first RH positive fetus

true

From which ventricle does blood leave for the pulmonary circuit. Through which valve and by which blood vessel does this blood get leave the heart for the lungs.

right ventricle/pulmonary valve

Which blood vessels deliver oxygenated blood from the lungs to the left atrium?

The pulmonary veins carry oxygenated blood from the lungs into the left atrium to be returned to systemic circulation. The aorta is the largest artery in the body. It carries oxygenated blood from the left ventricle of the heart into systemic circulation.

Where does the ascending aorta begin at?

the top of the left ventricle

Where (in relation to the aortic semilunar valves) do the coronary arteries come off the aorta?

Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet.

What are the three blood vessels that come off of the aortic arch?

divides into right common carotid artery and the right subclavian artery), the left common carotid artery, and the left subclavian artery.

How many brachiocephalic trunks are there?

one

How many brachiocephalic veins are there? See slide 14 for answer.

two veins

How many common carotid arteries do we have?

two

In general, what structures are served blood by the external carotid arteries

right branches from the right common carotid and left branches from the left common carotid artery

What structures are served by the internal carotid arteries?

cerebral branches

True or false: The biceps muscle is supplied by the internal carotid artery

true

The descending aorta runs from aortic arch to which vertebral level?

sternomanubrial joint

The descending thoracic aorta runs from the aortic arch to the diaphragm. In many texts, this part of the descending aorta is simply called the thoracic aorta

The thoracic aorta crosses the …………………..and is then referred to as become the descending abdominal aorta (OR simply as the abdominal aorta)

Be able to ID at least one branch of the abdominal aorta on a diagram

What are the three branches of the celiac trunk?-What do they supply?

left gastric artery, common hepatic artery, and the splenic artery..supplies blood

The superior mesenteric supplies 90 percent of the …………………intestines and about 50 percent of the …………………………………intestine

At the level of L4/L5 the abdominal aorta divides into what two arteries?

right and left common iliac arteries

Each of these divides into a) ……………… artery that sends blood to the pelvis, and b) an external iliac artery. that sends blood to the lower limb.

The last artery in item above crosses the body wall to become the ……………………………..artery on the medial aspect of the upper thigh

True or false: The gastrocnemius is supplied by the internal carotid arteries

true

The femoral artery runs down the medial aspect of the thigh, then becomes posterior at the knee joint, where it is called the …………… artery.

femoral

Just below the knee, the ……………… artery divides into an anterior tibial artery and a……………….. artery. The ……………….. gives off a lateral branch called the ……………… artery.

The posterior tibial artery runs down the medial side of the ankle to end up as the deep plantar arch. The anterior tibial crosses the ankle as the “dorsal pedal” artery to supply the dorsal surface of the foot. The fibular artery runs down the lateral edge of the foot…see slides 47, 48 and 49

What area is drained by the internal, jugular veins?

brain face neck

What area is drained by the external jugular veins?

deep parts of the face

The internal jugular and subclavian veins unite to form the Brachiocephalic what?

vein

What region of the trunk is drained by the azygos vein?

upper lumbar region

What three veins come together to form the Hepatic portal vein?

inferior and superior mesenteric vein and the splenic vein

What great vein drains the dorsum of the foot?

great saphenous vein

What drains the plantar surface of the foot?

Why are the lungs and liver bypassed by vascular shunts in the fetus?

lungs develop late

What shunt bypasses the liver? What does it become after birth

TIPS

What two shunts bypass the lungs? What do they become after birth

foramen ovale

What are the three components of the lymphoid system

fluid, vessels that transport the lymph, and organs that contain lymphoid tissue

What is the main component of ECF?

fluid outside of cells

What two forces drive the movement of ECF

Why do we need the lymphatic system

helps get rid of body toxins

Is the lymphatic system one way or two way.?

one way system

Where does it dump the collected fluid?

back into the system

Where does the lymphatic system originate from ?

plasma

Are lymphatic capillaries smaller or larger than blood vascular capillaries. Are they more or less permeable?

larger/yes

What are the different types of lymphatic vessels?

how are lymphatic collecting vessels similar to veins

Like veins of the blood vascular system, the lymphatic collecting vessels have three tunics and are equipped with valves Carry lymph.

Give an example of tissue without lymphatic vessels. What is a lacteal

lyphatic capillary that absorbs dietary fats in the villi of the small intestine

What does cisterna chyli drain?

white fat from the digestive organs

Know the pattern of drainage in 18-9

What are primary and secondary lymphoid organs?

primary-where lymphocytes are formed and mature

secondary-maintain mature naïve lymphocytes and initiate an adaptive immune response

What is the major cell type in lymphoid organs? 18-9b

reticulocytes and FDCs

18-10 is FYI to appreciate the global coverage by the lymphoid system

What are the functions of lymph nodes. Name two other cell types, apart from lymphocytes, that are present in lymph nodes?. Do not memorize 18-11 .Simply understand the organization of a lymph node and the flow of lymph through it.

What is one function of spleen (18-30)? Be able to locate spleen (18-29)

act as a filter for your blood

What is the function of thymus? Is it fully present in the adult? Can you recognize it 18-33

containing glandular tissue and producing several hormones

What is malt? Give an example of MALT.

mucosa associated lymphatic tissue

-small intestines