Practice Test 23 - Anatomy Final

Check all of the ways in which the heart chambers are involved in pulmonary circulation. Oxygenated blood enters the left atrium. Oxygenated blood enters the right atrium. Deoxygenated blood from the systemic circulation enters the right atrium. Deoxygenated blood from the systemic circulation enters the left atrium. Once in the heart, deoxygenated blood is pumped from the right atrium to the right ventricle. Once in the heart, deoxygenated blood is pumped from the left atrium to the left ventricle.

Oxygenated blood enters the left atrium. Deoxygenated blood from the systemic circulation enters the right atrium. Once in the heart, deoxygenated blood is pumped from the right atrium to the right ventricle.

Which vessel drains capillaries? Postcapillary venules Metarterioles Elastic arteries Sinusoids

Postcapillary venules

Match the vein with its companion vessel. 1. Large vein 2. Venule 3. Medium-sized vein Elastic artery Muscular artery Arteriole

1 - Elastic artery 3 - Muscular artery 2 - Arteriole

Match the blood pressure reading with the event in the heart that is associated with it. 1. Ventricular relaxation 2. Ventricular contraction Systolic blood pressure Diastolic blood pressure

2 - Systolic blood pressure 1 - Diastolic blood pressure

Place the blood vessel tunics in order from most external to most internal. Tunica intima Tunica media Tunica externa

3 - Tunica intima 2 - Tunica media 1 - Tunica externa

Sequence the flow of blood through the systemic circuit, from the moment blood leaves the left ventricle until it arrives at the right atrium. Enters systemic capillaries Enters veins Enters arterioles Enters either the superior or inferior vena cava Enters venules Enters muscular arteries Enters the aorta Enters elastic arteries

5 - Enters systemic capillaries 7 - Enters veins 4 - Enters arterioles 8 - Enters either the superior or inferior vena cava 6 - Enters venules 3 - Enters muscular arteries 1 - Enters the aorta 2 - Enters elastic arteries

Place the structures in order, beginning with the one with the highest blood pressure and ending with the one with the lowest. Venules Veins Arterioles Aorta Capillaries Venae cavae Arteries

5 - Venules 6 - Veins 3 - Arterioles 1 - Aorta 4 - Capillaries 7 - Venae cavae 2 - Arteries

Where does gas exchange occur between the blood and tissues? Arteries Venules Capillaries All of the answers are correct; gas exchange is a continuous process along the circulatory path.

Capillaries

How do veins return blood to the heart? Select all that apply. Veins have one-way valves that prevent backflow in the limbs. The contraction of skeletal muscles helps push the blood back toward the heart. The skeletal muscle pump involves the automatic contraction of the smooth muscles in the walls of the veins. The pressure from the arteries is sufficient to push the blood through the veins and back to the heart.

Veins have one-way valves that prevent backflow in the limbs. The contraction of skeletal muscles helps push the blood back toward the heart.

Blood pressure is highest in the ___________ and lowest in the _____________. arteries; capillaries arterioles, venules brachial artery; capillaries arteries closest to the heart; veins

arteries closest to the heart; veins

Capillaries connect ___________ to venules.

arterioles

Arteriole vasoconstriction _____________ blood flow into the capillaries, while arteriole vasodilation _____________ blood flow into the capillaries. increases; decreases decreases; increases increases; does not change decreases; does not change

decreases; increases

In the pulmonary circuit, blood leaves the ________ to pass through the lungs, then returns to the heart by entering the ________. right ventricle; left atrium left ventricle; right atrium right atrium; left ventricle left atrium; right ventricle

right ventricle; left atrium

In the blood pressure reading of 125/85, the top number is the systolic blood pressure. diastolic blood pressure. true blood pressure.

systolic blood pressure.

Capillaries have only a tunica media. tunica externa. tunica intima.

tunica intima.