Question

laboratory report
section
the corresponds to the indicated learning outcome(s) found at the beginning of the laboratory exercise.
38
heart structure
part a assessments
match the terms in column a with the descriptions in column b. place the letter of your choice in the space provided.
column a
column b
a. aorta

1. structure from which chordae tendineae originate

b. cardiac vein

1. prevents blood movement from right ventricle to right atrium

c. coronary artery

1. membranes around heart

d. coronary sinus

1. prevents blood movement from left ventricle to left atrium

e. endocardium

1. gives rise to left and right pulmonary arteries

f. mitral valve

1. drains blood from myocardium into right atrium

g. myocardium

1. inner lining of heart chamber

h. papillary muscle

1. layer largely composed of cardiac muscle tissue

i. pericardial cavity

1. space containing serous fluid to reduce friction during heartbeats

j. pericardial sac

1. drains blood from myocardial capillaries

k. pulmonary trunk

1. supplies blood to heart muscle

l. tricuspid valve

1. distributes blood to body organs (systemic circuit) except lungs

Explanation:

Each term in Column A is matched to its corresponding anatomical function/description in Column B based on human heart structure and physiology:

1. Papillary muscles anchor chordae tendineae.
2. Tricuspid valve controls right atrioventricular flow.
3. Pericardial sac encases the heart.
4. Mitral valve controls left atrioventricular flow.
5. Pulmonary trunk splits into pulmonary arteries.
6. Coronary sinus drains myocardium to right atrium.
7. Endocardium lines heart chambers.
8. Myocardium is cardiac muscle tissue.
9. Pericardial cavity holds serous fluid for friction reduction.
10. Cardiac veins drain myocardial capillaries.
11. Coronary arteries supply blood to heart muscle.
12. Aorta distributes systemic blood (excluding lungs).

Answer:

1. h. Papillary muscle
2. l. Tricuspid valve
3. j. Pericardial sac
4. f. Mitral valve
5. k. Pulmonary trunk
6. d. Coronary sinus
7. e. Endocardium
8. g. Myocardium
9. i. Pericardial cavity
10. b. Cardiac vein
11. c. Coronary artery
12. a. Aorta