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Alexis Alender

physio final

Within the nervous system, coding for the strength of a stimulus is accomplished through: the frequency of nerve impulses.
Stimulus-gated channels open in response to: sensory stimuli.
Serotonin is an example of a(n): amine neurotransmitter.
When an impulse reaches a synapse: chemical transmitters are released.
Dopamine, epinephrine, and norepinephrine are classified as: catecholamines.
Compared with the outside of the neuron, the inside has a ____ charge. negative
The part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the: hypothalamus.
(True or false) Most effectors of the autonomic nervous system are dually innervated by sympathetic and parasympathetic neurons. true
Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus. coccygeal
(True or false) Biofeedback involves willful control of specific effectors normally controlled only autonomically. true
The cerebellum acts with the _____ to produce skilled movement cerebrum
Damage to the _____ nerve could make the diaphragm unable to function. phrenic
Acetylcholine can stimulate _____ receptors. nicotinic
Normal infants will show the Babinski reflex up to the age of _____ years. 1.5-2
The part of the brain that assists in the maintenance of balance is the: cerebellum
The term used to describe the collection of mechanisms that influence the circulation of blood is hemodynamics
Circulatory shock caused by a drop in the amount of blood in the circulatory system is called _____ shock. hypovolemic
_____, a natural constituent of blood, acts as an antithrombin and prevents clots from forming in vessels. heparin
Cardiac output is determined by stroke volume and heart rate.
Platelets play an important role in blood clotting.
The heart begins beating in the fetus at about what stage of development? After about 4 weeks
The physiological mechanism that dissolves clots is known as fibrinolysis.
The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is called: self tolerance
Which protein interferes with the ability of viruses to cause disease? interferon
Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? immunoglobulin M
Because T cells attack pathogens more directly, T-cell immune mechanisms are classified as _____ immunity. cell-mediated
The movement of phagocytes from blood vessels to an inflammation site is called diapedesis
Complement can best be described as an enzyme in blood
Lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses are known as natural killer cells
Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? spleen
Created by: alexisalender
 

 



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