During weeks 9-12 of fetal development, ________:

a. bone marrow begins to assume erythrocyte production
b. meconium begins to accumulate in the intestines
c. surfactant production begins in the fetal lungs
d. the spinal cord begins to be myelinated


Answer: a. bone marrow begins to assume erythrocyte production

Anatomy & Physiology

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Match the following muscle actions:

A) Extensor pollicis longus and brevis B) Flexor carpi ulnaris C) Extensor carpi radialis longus and brevis D) Flexor digitorum profundus 1) Flexes the wrist. 2) Slow-acting finger flexor. 3)Powerful wrist flexors that also stabilize the wrist during finger extension. 4) Extends and abducts the wrist. 5) Extends the thumb.

Anatomy & Physiology

Gas emboli may occur because a ________.

A) person holds his breath too long B) diver holds his breath upon ascent C) pilot holds her breath upon descent D) person breathes pure oxygen in a pressurized chamber

Anatomy & Physiology

Which of the following is controlled by the somatic motor division?

A) cardiac muscle B) glands C) smooth muscle D) skeletal muscle

Anatomy & Physiology

The partial pressure of _______ in the arteries is normally the most important input in regulating the magnitude of ventilation under resting conditions

Fill in the blank(s) with correct word

Anatomy & Physiology