Match the terms with their correct meanings.

-Specialized muscle fibers connecting the upper and lower heart chambers; bundle of His
A)aorta
B)arteriole
C)atrioventricular bundle
D)atrium
E)capillary
F)carbon dioxide
G)oxygen
H)diastole
I)systole
J)endocardium

Question

Match the terms with their correct meanings.

-Specialized muscle fibers connecting the upper and lower heart chambers; bundle of His
A)aorta
B)arteriole
C)atrioventricular bundle
D)atrium
E)capillary
F)carbon dioxide
G)oxygen
H)diastole
I)systole
J)endocardium

Quizplus · Accepted Answer

The atrioventricular bundle, also known as the bundle of His, is a specialized group of muscle fibers that connects the atria to the ventricles and coordinates the contraction of both chambers.

A: The aorta is the largest artery in the body and carries oxygenated blood from the heart to the rest of the body. 
B: Arterioles are small blood vessels that connect arteries to capillaries. 
D: The atria are the upper chambers of the heart that receive blood from the veins. 
E: Capillaries are tiny blood vessels where oxygen and nutrients are exchanged for carbon dioxide and waste products. 
F: Carbon dioxide is a waste product of cellular respiration that is carried by the blood to the lungs for exhalation. 
G: Oxygen is a gas that is carried by the blood to the body's cells for use in cellular respiration. 
H: Diastole is the relaxation phase of the cardiac cycle when the heart chambers fill with blood. 
I: Systole is the contraction phase of the cardiac cycle when the heart pumps blood out of the chambers. 
J: The endocardium is the innermost layer of the heart that lines the chambers and valves.

Match the Terms with Their Correct Meanings