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Physiology
Chapter 7-13
| Question | Answer |
|---|---|
| For a neurotransmitter to produce an inhibitory postsynaptic potential, which of the following channels must open? | Potassium and/or chloride channels |
| Severe depression can be caused by a deficit in certain brain synapses of: | amines |
| A synapse consists of: | a synaptic knob, a synaptic cleft, the plasma membrane of a postsynaptic neuron |
| Neurotransmitters are released in a synapse and bind to: | receptors on the postsynaptic neuron. |
| Which of the following is true of spatial summation? | Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron. |
| Which of the following statements about amino acid neurotransmitters is incorrect? | They are all inhibitory neurotransmitters. |
| The neurotransmitter that inhibits the conduction of pain impulses is | enkephalins |
| The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second. | 130 |
| The knee jerk can be classified as a segmental reflex because: | impulses that mediate it enter and leave the same segment of the cord |
| The spinal tract that is located in the side of the cord, originates in the brain, and terminates in the spinal cord is the _____ tract. | lateral corticospinal |
| The cerebellum acts with the _____ to produce skilled movement. | cerebrum |
| The part of the brain that assists in the maintenance of balance is the: | cerebellum |
| The vomiting reflex is mediated by the: | medulla |
| The dorsal nerve root | It is also called the posterior root, It includes the spinal ganglion, It includes sensory fibers. |
| If the dorsal root ganglia of the spinal nerve were destroyed, a person would lose _____ related to that pathway. | sensory perception |
| Cerebrospinal fluid is formed by filtration of blood in the: | choroid plexuses |
| The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is: | malleus, incus, and stapes |
| Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition. | tectorial |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph |
| The immediate effect of a steroid hormone on a cell is the: | transcription of RNA |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary |
| The receptors responsible for sensing crude and persistent touch are the: | Ruffini corpuscles |
| The major hormone produced by the corpus luteum is: | progesterone |
| Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness? | Thalamus |
| The term blood type refers to the type of blood cell | antigen |
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | erythropoietin |
| Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of | vasodilation |
| The vital capacity is equal to the sum of the: | inspiratory reserve volume, tidal volume, and expiratory reserve volume |
| The PCO2 in the atmosphere is: | less than in the alveolar air |
| A drop in the body’s production of carbonic anhydrase would hinder the formation of: | carbonic acid |
| The PCO2 in alveolar air is _____ blood. | less than in the systemic venous, equal to the systemic arterial |
| The major form by which carbon dioxide is transported in the circulatory system is: | as bicarbonate ions |
| The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. | 160 |
| Boyle’s law states that the volume of a gas varies _____ with pressure at a _____ temperature. | inversely; constant |
| Standard atmospheric pressure is _____ mm Hg. | 760 |
| The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: | vasoactive intestinal peptide |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide |
| The final product of carbohydrate digestion is a: | monosaccharide |
| Which blood vessel carries absorbed food from the GI tract to the liver? | Portal vein |
| The enterogastric reflex causes: | inhibition of gastric peristalsis |
Created by:
ntrumble
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