Valves of the Heart

Question 1

Right atrio-ventricular (tricuspid) valves has

Answer 1

3-cusps (anterior, posterior, & septal or medial)

Question 2

tricuspid) valve

The atrial surface of the cusps are

Answer 2

smooth

Question 3

tricuspid) valve

ventricular surfaces give attachment to

Answer 3

the chordae tendineae.

Question 4

(tricuspid) valve The base of each cusp is secured to

Answer 4

the fibrous ring that surrounds the atrioventricular orifice.

Question 5

tricuspid) valve

fibrous ring helps to

Answer 5

maintain the shape of the opening

Question 6

tricuspid) valve

Atrioventricular orifice

Answer 6

About one inch wide, admitting tips of 3 fingers

Question 7

Pulmonary Valve Surrounded by

Answer 7

fibrous ring which gives attachment to the cusps of the pulmonary valve.

Question 8

Pulmonary Valve is formed of

Answer 8

3 semilunar cusps (Rt, Lt, & anterior)

Question 9

Pulmonary Valve اشي مميز

Answer 9

No chordae tendineae or papillary muscles are attached to these cusps

Question 10

Pulmonary Valve the semilunar cusp function

Answer 10

After ventricular contraction, the recoil of
blood fills these pulmonary sinuses and forces the cusps closed. This prevents blood in the pulmonary trunk from refilling the right ventricle.

Question 11

The open mouths of the cusps are directed

Answer 11

upward into the pulmonary trunk.

Question 12

The free superior edge of each cusp has

Answer 12

Nodule of the semilunar cusp

Lunula of the semilunar cusp

Question 13

Nodule of the semilunar cusp

Answer 13

Middle, thickened portion

Question 14

Lunula of the semilunar cusp

Answer 14

A thin lateral portion

Question 15

Basis for Naming Cusps of the Aortic and Pulmonary Valves

Answer 15

truncus arteriosus has four cusps →truncus arteriosus divides into two vessels, each with its own three-cusp valve (pulmonary and aortic)→The heart undergoes partial rotation so that its apex becomes directed to the left, resulting in the arrangement of cusps

Question 16

Left atrioventricular orifice

Answer 16

Smaller than the right, admitting only tips

of 2 finger

Question 17

Left atrioventricular orifice Guarded by

Answer 17

mitral valve.

Question 18

Left atrioventricular orifice Surrounded by

Answer 18

fibrous ring which gives attachment to the cusps of mitral valve

Question 19

Mitral valve, which is also referred to as

Answer 19

the bicuspid valve

Question 20

Mitral valve is composed of

Answer 20

2 cusps

Question 21

2 cusps of Mitral valve

Answer 21

Anterior cusp

Posterior cusp:

Question 22

Anterior cusp of mitral valve lies

Answer 22

anteriorly and to right

Question 23

Posterior cusp of mitral valve lies

Answer 23

posteriorly and to left

Question 24

The atrial surfaces of the cusps

Answer 24

are smooth

Question 25

ventricular surfaces give attachment to

Answer 25

chordae tendineae

Question 26

Aortic orifice is surrounded by a

Answer 26

fibrous ring which gives attachment to the

cusps of aortic valve.

Question 27

Aortic valve is formed of

Answer 27

3 semilunar cusps (Rt, Lt, & posterior)

Question 28

position of the cusps of Aortic valve

Answer 28

• One anterior cusp (Right cusp: Rt coronary artery arises from it).
• 2 posterior cusps
  a. Left cusp: Lt coronary artery arises from it.
  b. Posterior cusp: noncoronary Cusp

Question 29

chordae tendineae when cusps of bicuspid is opened

Answer 29

slack

Question 30

chordae tendineae hen cusps of bicuspid is closed

Answer 30

taut

Question 31

papillary muscles hen cusps of bicuspid is opened

Answer 31

relaxed

Question 32

papillary muscles hen cusps of bicuspid is closed

Answer 32

contracted