Rickets is a condition marked by a softening and bending of bones that occurs in growing children, as a result of ________ deficiency.

A) vitamin A
B) vitamin D3
C) growth hormone
D) vitamin C
E) thyroid hormone


B) vitamin D3

Anatomy & Physiology

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The adult heart is roughly the size of

A) the liver. B) a man's clenched fist. C) the gallbladder. D) the hand of a 10-year-old. E) the brain.

Anatomy & Physiology

When the membrane potential is +15 mV, that portion of the membrane

a. is at the normal resting potential b. has a positively-charged inside border c. is more permeable to Ca2+ than normal d. is in the after hyperpolarization phase of an action potential e. is in a hyperpolarized state

Anatomy & Physiology

The growth rate for a scalp hair is about ________ per day for 1.5 to 7 years, and then the hair becomes dormant.

A. 1.3 cm B. 3.1 mm C. 1/30 mm D. 1.3 mm E. 1/3 mm

Anatomy & Physiology

Where are most carbohydrates in the body found?

A. Adipose tissue B. Pancreas glucose C. Muscle glycogen D. Blood glucose E. Liver glycogen

Anatomy & Physiology