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phys 7-13

QuestionAnswer
1.)No impulse can be sent through a neuron during the absolute refractory period.
2.Stimulus-gated channels open in response to: sensory stimuli
3.)The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second. 130
4.)There are two types of synapses—the electrical synapse and the __________ synapse..) chemical
5.)The cortex is capable of storing and retrieving information from both short-term and long-term memory
6.)Which region of the brain plays a part in the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unpleasantness? thalamus
7.)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
8.)The limbic system integrates emotion
9.)The action of acetylcholine is quickly terminated by its being hydrolyzed by the enzyme acetylcholinesterase.
10.)Both sympathetic and parasympathetic divisions are tonically active, which means they continually conduct impulses to autonomic effectors.
11.) The effect of sympathetic stimulation on the urinary bladder is relaxation
12.)A reflex consists of either a muscle contraction or a glandular secretion.
13.)The somatic motor system includes all the _____ motor pathways _____ the CNS. voluntary; outside
14.)The two-point discrimination test can be used to measure: the sensitivity of the skin in various parts of the body.
15.)Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness? thalamus
16.)The heart begins beating in the fetus at about what stage of development? after 4 weeks
17.)A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is erythropoietin
18. )The chemoreceptors in the carotid bodies are particularly sensitive to: hypercapnia
19.)In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of prothrombin activator.
20.)The function of which antibody is basically unknown? IgD
21.) Which antibody is synthesized by immature B cells and then inserted into their plasma membranes?. ) immunoglobulin m
22.)The lymphatic system serves various functions in the body. The two most important functions of this system are fluid balance, immunity
23.)The term used to describe the volume of air exchanged during normal inspiration and expiration is: tidal volume
24.)External respiration can be defined as: the exchange of gases between the lung and the blood capillaries in the lung. pulmonary ventilation.
25.)The function of surfactant is to: prevent each alveolus from collapsing as air moves in and out during respiration.
26.)Which of the following would you expect to happen to cellular respiration during exercise? Increased cellular respiration occurs during exercise, causing a rise in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause an increase in respiration rate.
27.)The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. passively out of
28.)The process of swallowing is known as: deglutition
29.)Which step of deglutition is under voluntary control? oral stage
30.Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? cephallic phase
Created by: quind27
 

 



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