Which of the following events occurs last?

A. IP3 stimulates Ca2+ release from the endoplasmic reticulum.
B. Ca2+ binds with calmodulin.
C. IP3 (inositol triphosphate) is produced.
D. Epinephrine combines with membrane-bound receptor on smooth muscle cell.
E. Calmodulin binds to the enzyme that phosphorylates myosin and cross-bridges form.


Answer: E. Calmodulin binds to the enzyme that phosphorylates myosin and cross-bridges form.

Anatomy & Physiology

You might also like to view...

In the renal corpuscle, the glomerular epithelium is a layer of specialized cells called:

a) tubular cells b) juxtaglomerular cells c) glomerulocytes d) macula densa cells e) podocytes

Anatomy & Physiology

____________________ conduction involves the spread of the action potential along every patch of membrane down the length of the axon

Fill in the blank(s) with correct word

Anatomy & Physiology

The auscultatory method of measuring blood pressure

A. relies on the insertion of a cannula into the vessel in which pressure is being measured. B. monitors the oscillations in the blood vessel during changes in pressure. C. involves an electronic transducer attached to a mercury manometer. D. relies on hearing Korotkoff sounds through a stethoscope. E. relies on hearing the sounds made by laminar flow of the blood.

Anatomy & Physiology

All arteries carry oxygenated blood.

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

Anatomy & Physiology