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Physiology

Week 7 - 13

QuestionAnswer
Indpolarization the membrance potential moves towards zero wheras in hyperpolarization the membrance potential moves away from zero. True
What mechanism quickly terminates the action of a neutransmitter once it binds to it postsynaptic receptor? neurotransmitter molecules are transported back into synaotic knobs, neurotramsmitters molecules are transported back into nearby glial cells, neurotransmitters molecules are metabolized into inactive componds. (all are correct)
Which is the only plexus that contains fibers from the thoracic region of the spinal cord? Brachial
Symathetic response generally have widespread effects on the body because: preganglionic fibers synapse with several postsynaptic fibers.
All of the following are nonsteroid hormones except: cortisol.
The somatic senses enable us to detect sensation including: touch, temperature, pain (all of the above).
Cardiac output is determined by stroke volume and heart rate.
Which are the two barorecptors that are located near the heart? aorticbarorecptors and corotis baroreceptor
Factors that affect the strength of myocardial contraction are called. inotropic factors.
Pyrogen molecules trigger the fever response by promoting the production of prostaglandins.
The primary organ of the lymphatic system is the thymus.
Which protein interferes with the ability of viruses to cause diseases? interferon
Lymphatic in the villi of the small intestines are called lacteals.
PCO2 in alveolar air is ______blood. less than the systemic venous and equal to the systemic venous Both A and C
During inspiration the expansion of the lungs causes: a decrease in alveolar pressure
Glucose moves from the GI into the circulatory system by yhe process of: cotransport.
The enterogastric reflex causes: inhibitation of gastric perisstalsis
Which phase of gastric secretion is (are) stimulated by the sight taste and smell of food Cephalic phase
The enzyme pepsin gegins the digestion of: protein
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