Exam 1: Anatomy and Physiology

Name the two main branches of the left coronary artery.

Blood leaves the left ventricle through the _____ valve to the aorta and its branches and is distributed throughout the body.

The primary neurotransmitters of the sympathetic division of the autonomic nervous system are _____.

The right atrium receives venous blood from the head, neck, and thorax via the _____, from the remainder of the body via the _____, and from the heart via the _____.

Completion -__________ is the period during which a heart chamber is contracting and blood is being ejected.

What factors affect stroke volume?

Completion -The ______ chambers receive blood from the vena cava and coronary sinus.

Which side of the heart is a low-pressure system that pumps venous blood to the lungs?

The _____ artery supplies the right atrium and ventricle with blood.

The heart is divided into _____ chambers but functions as a _____-sided pump.

Match each item to the correct description below. -Electrolyte very important in cardiac muscle contraction.

Explain the Frank-Starling law of the heart.

Rapid ejection of blood from the ventricular chambers of the heart occurs because the _____ and _____ valves open.

Which side of the heart is a high-pressure system that pumps arterial blood to the systemic circulation?

Describe the function of the right atrium of the heart.

The left atrium receives blood from the _____.

The right ventricle expels blood through the _____ valve into the pulmonary trunk.

List six of the signs and symptoms of decreased cardiac output.

Completion -The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the __________.

Which of the following are semilunar valves?