In the myofibril, ATP is used for which of the following?

A) muscle tone
B) muscle contraction
C) muscle relaxation
D) All of the above.


Answer: D) All of the above.

Anatomy & Physiology

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Which nitrogenous base is unique to RNA molecules?

A) uracil B) cytosine C) adenine D) guanine E) thymine

Anatomy & Physiology

Which of the following is not true of our adaptive immune system?

A. It is specific. B. It has memory. C. It is restricted to the initial infection site. D. It uses both antibodies and cells to fight infection.

Anatomy & Physiology

________ is the amount of air that moves into the respiratory system during a single respiratory cycle under resting conditions

A) Residual volume B) Expiratory reserve volume C) Inspiratory reserve volume D) Tidal volume E) Inspiratory capacity

Anatomy & Physiology

This figure shows a lymph node and its components. What structure is indicated by number 4?

A. Lymphatic nodule B. Medullary cord C. Trabecula D. Lymphatic sinusoid E. Hilum

Anatomy & Physiology