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Physiology

Week 7-13

QuestionAnswer
A hematocrit of 56% would be an indication of: polycythemia.
Recognition of antigens by antibodies occurs when an antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site.
Vital capacity is defined as the: maximum volume of air that can be moved into and out of the lungs during forced respiration.
Which of the following constitutes total lung volume? Residual volume and vital capacity
The vital capacity is equal to the sum of the: inspiratory reserve volume, tidal volume, and expiratory reserve volume.
Which of the following is not true of enzymes? They accelerate chemical reactions. They change chemically and are in the end products of the reaction. They are vital to chemical reactions. Many contain vitamins in their structure. They change chemically and are in the end products of the reaction.
The enterogastric reflex causes: inhibition of gastric peristalsis
both atria receive their blood supply from branches of the right and left coronary arteries.t/f false
All of the following are nonsteroid hormones except: oxytocin. calcitonin. cortisol. glucagon. cortisol
Which is not true of the hormone somatostatin? It is produced by the delta cells of the pancreas. It inhibits the secretion of glucagon. It stimulates the secretion of insulin. Both B and C are not true of the hormone somatostatin. Both B and C are not true of the hormone somatostatin.
The immediate effect of a steroid hormone on a cell is the: transcription of RNA.
The somatic senses enable us to detect sensations, including: touch. temperature. pain.
Accommodation for near vision necessitates an increase in the curvature of the lens. constriction of the pupils. convergence of the two eyes
Dorsal Nerve Root is also called the posterior root. It includes the spinal ganglion. It includes sensory fibers. t/f true
The parasympathetic and sympathetic divisions always act with a cooperative influence, and through summation of the impulses, the effect can be increased.t/f false
Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system? If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.
Which of the following is not true of the knee jerk reflex? It is a flexor reflex. It is an ipsilateral reflex. It is a spinal cord reflex. It does not have to involve the brain It is a flexor reflex
The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic. true
There are 5 lumbar nerve pairs.t/f true
The spinal tract that is located in the side of the cord, originates in the brain, and terminates in the spinal cord is the _____ track lateral corticospinal
Acetylcholine is in the same class of neurotransmitters as: serotonin. histamine. dopamine. none of these
A slight shift away from the resting membrane potentials in a specific region of the plasma membrane is called a _____ potential. local
The sodium pump has moved Na+ to the outside of the plasma membrane, what is this called? neuron with a resting potential
Triglycerides, Amines, Amino acids, Neuropeptides, which of these is not one of the main chemical classes of neurotransmitters? Triglycerides
Spatial summation-Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron.t/f true
When current leaps across an insulating myelin sheath from node to node, the type of impulse conduction is called: saltatory conduction
Nitric oxide Acetylcholine Carbon monoxide All of the above are used by the body as neurotransmitters.t/f true
The neurotransmitter(s) that inhibit(s) the conduction of pain impulses is(are): enkephalins.
A synapse consists of: a synaptic knob. a synaptic cleft. the plasma membrane of a postsynaptic neuron.
Dopamine, epinephrine, and norepinephrine are classified as: catecholamines
The outside of the plasma membrane is negatively charged, and the inside is positively charged is this true or false for an action potential? true
The first event to occur when an adequate stimulus is applied to a neuron is: some of the sodium channels at the point of stimulation open.
Created by: mcossey2001
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