Rickets, a disease characterized by overproduction and deficient calcification of osteoid tissue, is caused by a lack of sufficient

A. Vitamin D.
B. calcitonin.
C. Vitamin C.
D. thyroid hormone.
E. Vitamin A.


Answer: A

Anatomy & Physiology

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Voltage-gated potassium channels in a neuron's axon are triggered to open when membrane potential becomes more negative.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

The trigone is a triangular region of which of the following?

A. The hilum B. The renal cortex C. A renal pyramid D. The urinary bladder E. The prostatic urethra

Anatomy & Physiology

The composition of extracellular fluid has little affect on intracellular fluid amounts

Indicate whether the statement is true or false.

Anatomy & Physiology

If agglutination occurs after a blood transfusion, it may indicate

A. there were no agglutinins (antibodies) in the recipient blood. B. the wrong blood type was used. C. the donor had type O blood. D. the recipient had type AB blood.

Anatomy & Physiology