The pericardium - a. is a serious membrane enclosing the heart b. is a thick mem

Question

The pericardium -

a. is a serious membrane enclosing the heart

b. is a thick membrane with four layers

c. includes myocardium

d. forms the inner heart wall

the portion of the heart wall that dominates its volume and provides the propulsion of blood is called the

a. left ventricle

b. epicardium

c. myocardium

d. endocardium

as blood flows through the heart, it must pass through the ____ before entering the right ventricle

a. left ventricle

b. pulmonary ventricle

c. tricuspid valve

d. bicuspid valve

in the sheep heart, the heart chamber with the thickest wall is the

a. right atrium

b. left atrium

c. right ventricle

d. left ventricle

the dominant tissue of the heart can be distinguished from other tissues under the microscope by the presence of

a. intercalated disks between cells

b. striations

c. many nuclei

d. a large amount of cytoplasm

the string-like structures that anchor AV valves to papillary muscles are called

a. trabeculae carneae

b. chordae tendinease

c. pectinae muscles

d. semilunar valves

while dissecting the sheep heart, inserting a probe from the right ventricle into the right atrium of a sectioned heart penetrates through the

a. bicuspid valve

b. interventricular septum

c. tricuspid valve

d. myocardium

the ____ has two major branches: the anterior interventricular artery and the circumflex artery

a. right coronary artery

b. posterior interventricular artery

c. left coronary artery

d. great cardiac vein

the heart chamber that receives blood from the left atrium is the

a. let ventricle

b. right ventricle

c. right atrium

d. aorta

the heart structure dividing the two ventricles is called the

a. ventricular orifice

b. interatrial septum

c. interventricular septum

d. myocardium

Explanation / Answer

1. a. is a serious membrane enclosing the heart

2. c. myocardium

3. c. tricuspid valve

4. a. intercalated disks between cells

5. b. chordae tendinae

6. c. tricuspid valve

7. c. left coronary artery

8. a. left ventricle

9. c. interventricular septum

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