MPP Cardiovascular Midterm Exam

The main functions of the Cardiovascular system are:

• Transporting nutrients, oxygen, and hormones to cells and removing waste products

• Producing digestive enzymes for food breakdown

• Controlling voluntary muscle movements

• Regulating body temperature through sweat glands

2. The blood vessels that pump blood away from the heart are called:

• Arteries

• Veins

• Capillaries

• Venules

What are the blood vessels called that carry blood back to the heart, and how does blood move through these vessels?

• Veins; blood moves by the squeezing action of muscles and valves preventing backflow

• Arteries; blood moves by the pumping action of the heart

• Capillaries; blood moves by diffusion

• Aorta; blood moves by gravity

Transport of materials by the cardiovascular system is necessary to maintain _______ of the body.

• homeostasis

• digestion

• respiration

• excretion

The heart is a ______ organ in the chest.

• muscular

• bony

• cartilaginous

• glandular

On each side of the heart, blood is pumped from the ______ to the ventricle below it.

• atrium

• artery

• vein

• aorta

Like skeletal muscle, ______ muscle is striated.

• cardiac

• smooth

• visceral

• connective

Cardiac muscle routinely contracts without stimulation by the nervous system, unlike skeletal muscle.

• True

• False

Specialized cardiac muscle cells send out ______ that stimulate the contractions.

• electrical impulses

• hormones

• digestive enzymes

• red blood cells

Cardiac muscle is organized into _______.

• sarcomeres

• myofibrils

• fascicles

• tubules