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Exam 2

QuestionAnswer
The blood-brain barrier is maintained by the astrocytes
An action potential originates at the ________ and travels along the axon until it reaches the ________. axon hillock : axon terminal
When a cell is not active, its membrane potential is referred to as a(n) ________ potential. resting
Temporary local changes in the resting potential on the cell body or dendrites of a neural cell are called ________ potentials. graded
The neurotransmitters used in cell-to-cell communication are synthesized in the cell body
Efferent fibers carry information from ________ to ________. central nervous system to periphreal nervous system
Cells that myelinate neurons are named ________ in the CNS and ________ in the PNS. oligodendrocytes; Schwann cells
Neurons that have one axon and one dendrite with the soma between them are called bipolar
The all-or-none principle states that all stimuli great enough to bring the membrane to threshold will produce identical action potentials.
Bundles of CNS axons that share a common origin, destination, and function are called ________. tracts
Chemical compounds released by presynaptic cells are called neurotransmitter
The ________ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity. autonomic
Which of the following potentials has an all-or-none response? action potentials
Another name for the patellar reflex is the Knee jerk
The slender canal running between the third and fourth ventricles is called the cerebral aquaduct
The meningeal area that contains cerebrospinal fluid is called the subarachnoid space
Diffusion across which structure(s) returns excess CSF to venous circulation? arachnoid granulations
Which of the following performs such abstract intellectual function as predicting the future consequences of events or actions? prefrontal cortex
Respiratory depth is controlled by the ________ while basic pace is set by the ________. pons : medulla oblongata
Touch receptor information is received by the primary sensory cortex
Sensory information enters the spinal cord through the dorsal root
The speech center of the cerebrum is known as the Broca's area
Major centers concerned with autonomic function, such as heart rate, blood pressure, and respiration is the medulla oblongata
The ability to predict the consequence of an action is located in the prefrontal cortex
Which of the following is NOT true of the patellar reflex? it is processed in the hypothalmas
The ________ acts as a switching and relay center for integration of conscious and unconscious sensory information and motor commands. diencephalon
The brain region that relays and processes sensory information is called the thalmus
Parasympathetic functions include all of the following, except dilation of airways
Which of the following would lead to increased heart rate? both increase of sympathetic input and and decrease of parasympathetic input
The balance between sympathetic and parasympathetic activity is determined primarily by ________. voluntary mechanisms
Stimulation of the beta1 receptors on heart muscle cells results in increased blood pressure, increased heart rate, increased force of contraction
In general, sympathetic preganglionic fibers are ________ and postganglionic fibers are ________. short ; long
The division of the autonomic nervous system that usually stimulates tissue metabolism is the sympathetic division
In general, parasympathetic preganglionic fibers are ________ and postganglionic fibers are ________. long ; short
Secretions by the various digestive glands are stimulated by parasympathetic division
Norepinephrine is the neurotransmitter for postganglionic sympathetic neurons.
The adrenal cortex produces mineralocorticoids
Which of the following hormones is/are produced by both the testes and the ovaries? inhibin
Hormone-producing cells of the testes produce testosterone
Which of the following hormones requires a releasing hormone from the hypothalamus in order to be released? ADH
Regarding pancreatic hormones, parasympathetic stimulation enhances insulin release, and sympathetic stimulation inhibits it.
Which of the following is released by the posterior pituitary? ADH
Created by: iessnorris
 

 



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