Cardiovascular System Lecture Exam 4 Questions with 100% Correct Answers

Cardiovascular System Lecture Exam
4(8

The heart propels blood to and from most body tissues via TWO basic types of BLOOD VESSELS:
- ANSWERSArteries, Veins



_______ are blood vessels that carry blood AWAY from the heart - ANSWERSArteries



______ are blood vessels that carry blood BACK to the heart - ANSWERSVeins



3 classes of blood vessels: - ANSWERS1. Capillaries

2. Arteries

3. Veins



ARTERIES become progressively ______ as they branch and finally result in ________ -
ANSWERSsmaller, capillaries



VEINS become progressively _____ as they merge and are closer to the heart - ANSWERSlarger



Both ARTERY and VEIN WALLS have 3 layers, called _____ - ANSWERSTunics



From outer to inner: - ANSWERS1. Tunica externa (Adventitia)

2. Tunica media

3. Tunica intima (Interna)

, TUNICA EXTERNA:

1. CT that helps anchor the ____ ____ to an organ

2. Larger blood vessels contain ____ ____ (Blood supply) - ANSWERSblood vessel,

vasa vasorum



TUNICA MEDIA:

1. Comprised of _____ arranged SMOOTH muscle

2. Responsible for _____ and ____ - ANSWERScircularly,

vasoconstriction, vasodilation



SYMPATHETIC input = ____________ - ANSWERSVasoconstriction



PARASYMPATHETIC input = _______ - ANSWERSVasodilation



TUNICA INTIMA:

1. Composed of ______ and a layer of ____ _____ - ANSWERSEndothelium, connective tissue



Blood flow through the heart is _________ because of ____ valves within the heart -
ANSWERSUnidirectional, 4



The heart is functionally 2 _____________ _____ that work at the SAME rate and pump the
SAME VOLUME of blood - ANSWERSside-by-side pumps



The RIGHT-SIDE pump directs blood to the ______ - ANSWERSlungs



The LEFT-SIDE pump directs blood to the _____ ____ - ANSWERSbody tissues