Epinephrine

A. causes vasoconstriction of blood vessels in skeletal muscle.
B. causes vasodilation of coronary blood vessels.
C. decreases red blood cell count.
D. increases the heart rate but decreases the stroke volume.
E. decreases the force of contraction.


Answer: B

Anatomy & Physiology

You might also like to view...

Troponin assists in controlling the interaction between myosin heads and thin filaments by

A) moving the tropomyosin molecules to expose the active sites. B) assisting in the formation of the myofilaments. C) forming a long chain that covers the active sites. D) holding the tropomyosin strands in place. E) both holding and moving the tropomyosin strands.

Anatomy & Physiology

Where are the transverse palatine folds located?

A. Labial frenulum B. Pharyngopalatine arch C. Glossopalatine arch D. Soft palate E. Hard palate

Anatomy & Physiology

Which of the following movements is a good example of depression?

A) opening the mouth B) turning the hand palm upward C) extreme backward bending of the head D) moving the hand toward the shoulder E) spreading the fingers

Anatomy & Physiology

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

A) cardiac tamponade. B) mitral valve prolapse. C) pleural effusion. D) cardiomyopathy. E) pericarditis.

Anatomy & Physiology