Apocrine Glands, Which Begin to Function at Puberty Under Hormonal

question 24

Multiple Choice

Apocrine glands, which begin to function at puberty under hormonal influence, seem to play little role in thermoregulation. Where would we find these glands in the human body?

• A) in all body regions and buried deep in the dermis
• B) beneath the flexure lines in the body
• C) in the axillary and anogenital area
• D) in the palms of the hands and soles of the feet

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Definitions:

Myosin Head

The globular part of the myosin protein that binds to actin filaments in muscle cells during contraction.

Troponin

A protein complex involved in the regulation of skeletal and cardiac muscle contraction, which binds to calcium ions causing a change that allows muscle contraction.

ATPase Activity

The enzymatic activity involved in hydrolyzing ATP (adenosine triphosphate) to release energy.

Thin Myofilament

A component of the muscle fiber responsible for muscle contraction, composed primarily of the protein actin.