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Physio Weeks 7-13

Nightingale College

QuestionAnswer
Dopamine, epinephrine, and norepinephrine are classified as: Catecholamines
A synaptic knob would be located on a(n): Axon
During a relative refractory period: The action potential can be initiated with a strong stimulus.
The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? Almost 300x faster
The neurotransmitter(s) that inhibit(s) the conduction of pain impulses is(are): Enkephalins
Norepinephrine is liberated at: most sympathetic postganglionic nerve endings.
Which is(are) the neurotransmitter(s) in a somatic motor pathway? Acetylcholine
Impulses from the _____ play a part in arousing or alerting the cerebrum. Thalamus
Acetylcholine can stimulate _____ receptors. Nicotinic
Sympathetic responses generally have widespread effects on the body because: Preganglionic fibers synapse with several postsynaptic fibers.
The type of cells that secrete ACTH are: Corticotrophs.
In comparison with the nervous system, the regulatory effects of the endocrine system are: Slow to appear but long-lasting.
When you are looking at a large green field, which cones would be sending the green wavelength to the brain? M
The receptors responsible for sensing crude and persistent touch are the: Ruffini Corpuscles
The production of thyroid hormone is stimulated by another hormone from the: Anterior pituitary.
Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of Vasodilation
Cardiac output is determined by Stroke volume and HR
Factors that affect the strength of myocardial contraction are called: Inotropic factors.
The vagus is said to act as a “brake” on the heart. This situation is called: Vagal Inhibition
The heart begins beating in the fetus at about what stage of development? After about 4 weeks
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
Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? Spleen
The _____ postulates that when an antigen enters the body, it selects the clone whose cells are committed to synthesizing its specific antibody and stimulates these cells to proliferate and to thereby produce more antibodies. Clonal Selection Theory
Molecules formed by the reactions of the complement cascade assemble themselves on the enemy cell’s surface, which results in: Cytolysis
Standard atmospheric pressure is _____ mm Hg. 760
Vital capacity is defined as the: Maximum volume of air that can be moved into and out of the lungs during forced respiration.
Excessive fluid in the pleural cavity would be most likely to cause: Decreased vital capacity
About 98.5% of the oxygen carried by systemic arterial blood is attached to: Hemoglobin
Carbon dioxide is carried in three forms in the blood. Ranking them from greatest to least amount carried, the sequence would be: Bicarbonate ion, carbaminohemoglobin, and dissolved in plasma.
The process of fat emulsification consists of: Breaking fats into small droplets.
Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? Cephalic phase
The hormone that stimulates the release of bicarbonate substance from the pancreas is: Secretin
The hormone that stimulates the gallbladder to release bile is: Cholecystokinin
Which of the following is not true of enzymes? They change chemically and are in the end products of the reaction.
Created by: bpalada1
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