The word "cascade" can be defined as a series of small waterfalls, one leading to the next. Describe a specific second-messenger cascade that results from the series of chemical reactions (from one to the next) initiated by a hormone binding to its receptor.

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One example is how glucagon works through the cAMP, PKA cascade to cause release of glucose from liver cells. The receptor activates the G protein, which activates AC, which synthesizes cAMP, which activates PKA, which phosphorylates enzymes within the liver cell.

Anatomy & Physiology

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Phalanges are

A. finger and toe bones. B. forearm bones. C. wrist and ankle bones. D. skull bones.

Anatomy & Physiology

List 4 characteristics of New World monkeys

What will be an ideal response?

Anatomy & Physiology

All of the following are veins of the lower limbs EXCEPT the ________

A) external iliac vein B) fibular vein C) popliteal vein D) hepatic veins

Anatomy & Physiology

The ____ is a comma-shaped structure located along the posterior border of a testis

a. epididymis b. straight tubule c. scrotum d. seminiferous tubule

Anatomy & Physiology