A&P II Quiz 1 Flashcards

How would a chemical that blocks sodium channels in neuron cell membranes affect its ability to depolarize?

What effect would decreasing the concentration of extracellular potassium ions have on the transmembrane potential of a neuron?

Which type of gated channel responds to physical distortion of the membrane surface? Where is this ability important?

Which of the choices below correctly lists the steps of an action potential?

Which area of the diencephalon would be stimulated by changes in body temperature?

Damage to the amygdaloid body would interfere with regulation of what division of the ANS?

Which of the following is NOT a function of the limbic system?

What is the name given to axons carrying information between the brain and the spinal cord, and through which brain regions do they pass?

What symptoms would you expect to observe in an individual who has damage to the basal nuclei?

A patient suffers a head injury that damages her primary motor cortex. Where is the primary motor cortex and what functions will be lost due to the injury?

Paul is having a difficult time remembering facts and recalling long-term memories. Which part of his cerebrum is involved?

Which of these is NOT usually a characteristic function associated with the left cerebral hemisphere?

The relationship between a neurotransmitter, such as NE and cAMP is ___, which is enhanced by a "link" called a ___?

In what way(s) is/are temporal and spatial summation the same?

A patient has damage to several spinal nerves. Which of the major divisions of the nervous system has been damaged?

You've just touched a hot stove. What type of reflex did you experience ___ and in what way was your brain involved in the reflex?

Which of the following is true concerning the spinal cord?

Why are spinal nerves classified as "mixed" nerves?

Which of these is NOT a site at which acetylcholine is released at a synapse?

Norepinephrine, dopamine, and serotonin are all members of which category of neurotransmitter?

A person you know has experienced sleep problems and prolonged depression. Which neurotransmitter may be in short supply?

Which of the following is true concerning neuromodulators?

An anesthetic blocks the function of the dorsal rami of the cervical spinal nerves. Which areas of the body will be affected?

Injury to which nerve plexus would interfere with the ability to breathe ___? Which nerve is the major nerve of this plexus?

If a patient has persistent numbness in the medial two fingers, which nerve of the brachial plexus has been damaged?

Damage to the long thoracic nerve would cause paralysis to which muscle(s)?

Compression of which nerve produces the sensation that your leg has "fallen asleep"?

Someone with paralysis of the anterior thigh muscles would have damage at which spinal segments?

What is the minimum number of neurons in a reflex arc?

Which of these is NOT an important factor concerning reflexes?

What is the term used when one presynaptic neuron synapses with multiple postsynaptic neurons ____? When is this useful ___?

Reflex responses usually remover or oppose the stimulus therefore this type of reflexive response would be considered an example of ___.

One of the first somatic reflexes to develop is the suckling reflex. Which type of reflex is this?

How would the stimulation of the muscle spindles involved in the patellar (knee-jerk) reflex by gamma motor neurons affect the speed of the reflex?

A weight lifter is straining to lift a 200-kg barbell. Shortly after he lifts it to chest height, his muscles appear to relax and he drops the barbell. Which reflex has occurred?

The neurilemma of axons in the peripheral nervous system is formed by

Glial cells that surround the neuron in ganglia are

Many medications introduced into the bloodstream cannot directly affect the neurons of the CNS because

The spinal cord is part of the

The ___ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament.

Spinal nerves are

The spinal cord consists of five regions and ____ segments.

The dorsal root ganglia mainly contain

After age ___ the vertebral column continues to elongate, but the spinal cord itself does not.

If the dorsal root of a spinal nerve is severed,

The subdural space lies between

The layer of the meninges in direct contact with the spinal cord is the

A dorsal and ventral root of each spinal segment unite to form a

In meningitis,

Which of the following is true regarding an epidural block?

The adult human brain contains almost ____ of the body's neural tissue

Male brains are typically ____ compared to female brains

During embryonic development, which of the following secondary brain vesicles will form the cerebrum?

Which of these is not one of the main divisions of the adult brain?

Which of the following lies between the cerebrum and the brain stem?

The floor of the diencephalon is formed by the

The tracts that connect the cerebellum to the brain stem are located in the

Autonomic centers that control blood pressure, heart rate, and digestion are located in the

The ____ filters and relays sensory information to the cerebral cortex.

Damage to the preoptic area of the hypothalamus leads to which problem?

Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely cause of these disorders. In what part of the brain is the tumor most likely located.

Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of

The two cerebral hemispheres are separated by the

divisions of the cerebral hemispheres that are named after the overlying skull bones are

Parkinson's disease is the result of

after suffering a stroke, Mary finds that she cannot move her right arm. This would suggest that the stroke damage is in the are of the ___ lobe.

After suffering a blow to the back of the head, Phil loses his vision. The blow probably caused damage to the

The general interpretive area

Difficulties in estimating temporal relationships between events may stem from damage to

Extensive damage to the oligodendrocytes in the CNS could result in