Positive feedback mechanisms usually produce

A) long-term changes.
B) unstable conditions.
C) changes returning values toward a set point.
D) stable conditions around a set point.


B

Anatomy & Physiology

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Which of the following is an extension of the peritoneum?

a. mesentery b. cecum c. the greater omentum d. both A and C above

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If 20% of the air is composed of O2, the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mm Hg is

a. 20 mm Hg b. 760 mm Hg c. 70 mm Hg d. 350 mm Hg e. 152 mm Hg

Anatomy & Physiology

The residual volume is the amount of air remaining in the lungs at the end of a normal expiration

Indicate whether the statement is true or false

Anatomy & Physiology

The normal site of implantation is the

a. ovary. b. uterus. c. oviduct. d. vagina. e. fimbria.

Anatomy & Physiology