Prior to being used as subjects, many laboratory animals are given a period of time to get used to the conditions in the laboratory, e.g., the light/dark cycle. The process they undergo during this time is referred to as
a. acclimation.
b. acclimatization.
c. adaptation.
d. adjustment.
e. evolution.
a
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Select the correct statement about cardiac output.
A) A slow heart rate increases end diastolic volume, stroke volume, and force of contraction. B) Decreased venous return will result in increased end diastolic volume. C) If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased. D) Stroke volume increases if end diastolic volume decreases.
The maximum force that can be attained by a contracting muscle occurs during ________
A) low frequency wave summation B) fused tetanus C) a maximal twitch
The inner cell mass of the blastocyst
A. consists of yolk-filled storage cells. B. contains cells that will form the embryo. C. represents the future placenta. D. will form the zona pellucida. E. contains cells that are discarded.
Which cutaneous glands are concerned with cooling the body?
A) Exothermic glands B) Merocrine glands C) Apocrine glands D) Sebaceous glands E) Ceruminous glands