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physiology
weeks 7-13
| Question | Answer |
|---|---|
| Dopamine, epinephrine, and norepinephrine are classified as: | catecholamines. |
| During a relative refractory period | the action potential can be initiated with a strong stimulus. |
| The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the | sodium-potassium pump |
| A synaptic knob would be located on a(n): | axon |
| A term commonly used as a synonym for action potential is | nerve impulse |
| Severe depression can be caused by a deficit in certain brain synapses of: | amines |
| The action of acetylcholine is quickly terminated by its being hydrolyzed by the enzyme | acetylcholinesteras |
| Each skin surface area supplied by sensory fibers of a given spinal nerve is a | dermatome |
| The somatic motor system includes all the _____ motor pathways _____ the CNS. | voluntary; outside |
| If the center of a reflex arc is the brain, the response it mediates is called a | cranial reflex. |
| Which cranial nerve is responsible for the sense of smell? | olfactory |
| The groove between the frontal and parietal lobes of the cerebral cortex is the | central sulcus |
| A reflex consists of either a muscle contraction or a | glandular secretion |
| The effect of sympathetic stimulation on the urinary bladder is | relaxation. |
| The _____ is an extension of the great toe, with or without fanning of the other toes, in response to stimulation of the outer margin of the sole of the foot. | Babinski sign |
| The receptors responsible for sensing crude and persistent touch are the: | Ruffini corpuscles. |
| When you are looking at a large green field, which cones would be sending the green wavelength to the brain? | M |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary. |
| The immediate effect of a steroid hormone on a cell is the: | transcription of RNA |
| The two-point discrimination test can be used to measure: | the sensitivity of the skin in various parts of the body. |
| Clearness or sharpness of visual perception is known as: | visual acuity |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics |
| Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of | vasodilation. |
| Which are the two baroreceptors that are located near the heart? | aortic baroreceptors and carotid baroreceptors |
| Circulatory shock caused by a drop in the amount of blood in the circulatory system is called _____ shock. | hypovolemic |
| The term blood type refers to the type of blood cell | antigen. |
| Molecules formed by the reactions of the complement cascade assemble themselves on the enemy cell’s surface, which results in | cytolysis |
| The movement of phagocytes from blood vessels to an inflammation site is called | diapedesis |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. | thymocytes |
| Pyrogen molecules trigger the fever response by promoting the production of | prostaglandins. |
| The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. | 160 |
| The PCO2 in the atmosphere is: | less than in the alveolar air |
| The function of the vibrissae in the vestibule is to: | provide an initial “filter” to screen particulate matter from air that is entering the system. |
| Cellulose is a residue of digestion that comes from: | carbohydrates. |
| The hormone that stimulates the gallbladder to release bile is: | cholecystokinin. |
| The hormone that stimulates the release of bicarbonate substance from the pancreas is: | secretin |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |
| An end product of fat digestion is: | glycerol |
| The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. | passively out of |
| When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes. | hydrolyzing |
Created by:
leilag1052