Within the nervous system, coding for the strength of a stimulus is accomplished through:

the frequency of nerve impulses.

become plasma cells when exposed to an antigen.

Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture.

directly related to the concentration of that gas in the mixture and

The function of surfactant is to:

prevent each alveolus from collapsing as air moves in and out during respiration.

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Physiology Chs 7 -13

Study stack - Phy 7 - 13

Question	Answer
Excitatory neurotransmitters are most likely to:	initiate an action potential.
Within the nervous system, coding for the strength of a stimulus is accomplished through:	the frequency of nerve impulses.
Dopamine, epinephrine, and norepinephrine are classified as:	catecholamines.
Acetylcholine can stimulate _____ receptors.	nicotinic
The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic.	True
The cerebellum performs all of the following functions except:	controls cardiac function.
Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness?	Brainstem
Visceroceptors are located in which of the following?	Internal organs
The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is:	malleus, incus, and stapes.
Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of	vasodilation.
A decrease in the amount of white blood cells is called	leukopenia.
If damaged, which valve could allow blood to leak back into the right atrium?	Tricuspid
_____, a natural constituent of blood, acts as an antithrombin and prevents clots from forming in vessels.	Heparin
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.
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
The functions of the lymph nodes are	defense and hematopoiesis.
The movement of phagocytes from blood vessels to an inflammation site is called	diapedesis.
Memory cells:	become plasma cells when exposed to an antigen.
Which gas law deals with the solubility of gases in solution?	Henry
The PCO2 in the atmosphere is:	less than in the alveolar air.
About 98.5% of the oxygen carried by systemic arterial blood is attached to:	hemoglobin.
Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture.	directly related to the concentration of that gas in the mixture and
The function of surfactant is to:	prevent each alveolus from collapsing as air moves in and out during respiration.
An end product of fat digestion is:	glycerol.
Polysaccharides are hydrolyzed into disaccharides by enzymes known as:	amylase.
Which step of deglutition is under voluntary control?	Oral stage
The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen.	passively out of
The hormone that stimulates the gallbladder to release bile is:	cholecystokinin

Created by: JulietNurse4

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