Cardiac muscle cannot undergo tetanus because its absolute refractory period lasts almost as long as the muscle twitch

Indicate whether the statement is true or false.


TRUE

Anatomy & Physiology

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Genetics is the study of

A) inheritance of characteristics. B) the effect of the environment on health. C) sperm and eggs. D) DNA.

Anatomy & Physiology

Skin temperatures may fluctuate between ___°F and ____ °F without damage

a. 40-98.6 b. 68-104 c. 0-98.6 d. 0-110 e. none of the above

Anatomy & Physiology

High endothelial venules in a lymphoid organ function to:

a. Allow the entry of splenic platelets into the bloodstream b. Attract interstitial macrophages to degenerating red blood cells, as in the spleen c. Enable the exit of lymphocytes from the bloodstream into the tissue parenchyma d. Establish a barrier between the bloodstream and the tissue parenchyma, as in the thymus e. Provide a copious flow of fluid that becomes lymph

Anatomy & Physiology

Which of the following enzymes is important for the metabolism of catecholamines?

A. Trypsin B. Tyrosine hydroxylase C. Superoxide dismutase D. Acetylcholinesterase E. Adenylyl cyclase

Anatomy & Physiology