front 1 Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers sending these signals will mot likely belong to which division of the nervous system? | back 1 Somatic nervous system |
front 2 The concentration of ions in the chemical environment surrounding the neurons must be tightly regulated for neurons to function properly. Which of the following ells is most responsible for this? | back 2 Astrocytes |
front 3 The concentration neurotransmitters in the fluid of the synaptic cleft must be tightly regulated for neurons to function properly. Which of the following cells is most responsible for aiding in this regulation? | back 3 Astrocytes |
front 4 Meningitis can be caused by infection of the central nervous system by bacteria. Which cells would be most responsible for removing the infection? | back 4 microglia |
front 5 An action potential is regarded as an example of positive feedback. Which of the following examples below best illustrates the positive feedback aspect of an action potential? | back 5 A threshold stimulus will cause the opening of voltage gated sodium ion channels that will cause further depolarizing stimulus. This stimulus will open still more voltage gated sodium ion channels. |
front 6 The depolarization phase of an action potential is punctuated by the closing of inactivation gates in the voltage gated sodium ion channels. All of the following are consequences of this inactivation except one. Choose the statement below that is not consequence of the closing of inactivating gates. | back 6 This allows for the efflux (diffusion out) of potassium ions, resulting in the repolarization of the cell. |
front 7 During the relative refractory period of an action potential, a larger than normal stimulus is needed to cause another action potential. This is due to the fact that _____. | back 7 The voltage gated potassium ion channels remain open long enough to hyperpolarize the axon membrane |
front 8 If a post synaptic cell is stimulated to threshold by temporal summation this implies that | back 8 A presynaptic neuron is sending frequent EPSP |
front 9 When a neurotransmitter like acetylcholine is acting in an excitatory manner which of the following is likely a result of the acetylcholine acting on the post synaptic cell? | back 9 Chemically gated sodium channels will open. |
front 10 When a neurotransmitter like GABA is anting in an inhibitory manner which of the following is likely a result of the GABA acting on the post synaptic cell? | back 10 Hyper-polarization of the postsynaptic cell membrane |
front 11 Bacteria in the blood can be prevented entry to the fluids surrounding the brain. Which cells are most responsible for preventing bacteria from entering the fluids of the brain? | back 11 Astrocytes |
front 12 Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system? | back 12 Sensory (afferent) divison |
front 13 Which brain nucleus is the body's "biological clock" | back 13 suprachiasmatic nucleus |
front 14 The primary auditory cortex is located in the _____. | back 14 temporal lobe |
front 15 The brain stem consists of the _____. | back 15 midbrain, medulla and pons |
front 16 Nuclei of cranial nerves V (trigeminal), VI (abducens), and VII (facial) are found in the _____ | back 16 Pons |
front 17 Which fissure separates the cerebral hemispheres? | back 17 Longitudinal fissure |
front 18 A shallow groove on the surface of the cortex is called a _____. | back 18 Suclus |
front 19 The central sulcus separates which lobes? | back 19 frontal from parietal |
front 20 The frontal love is separated fro the temporal lobe by the ____. | back 20 Lateral sulucs |
front 21 Broca's area _______> | back 21 is considered a motor speech area |
front 22 The large commissure that connects the right and left sides of the brain is called the _____. | back 22 corpus callosum |
front 23 What connects the hypothalamus to the pituitary gland? | back 23 infundibulum |
front 24 The _____ nervous system controls the skeletal muscles. | back 24 somatic |
front 25 Neurotransmitter for release is stored in the synaptic | back 25 vesicles |
front 26 The site of intercellular communication between neurons is the | back 26 synapse |
front 27 The axon is connected to the cell body at the | back 27 axon hillock |
front 28 The most abundant class of neuron in the central nervous system is | back 28 multipolar |
front 29 Neurons that have one axon and one dendrite, with the soma in between, are called | back 29 bipolar |
front 30 Sensory neurons of the PNS are | back 30 unipolar |