18) The right ventricle ________. A) has thinner muscular walls than does the le

Question

18) The right ventricle ________. A) has thinner muscular walls than does the left ventricle B) receives blood from the left atrium through the tricuspid valve C) pumps blood out of the heart to the systemic circuit D) pumps blood out of the heart through the aortic semilunar valve E) is connected to the pulmonary veins

20) The moderator band is located in the ________.

A) left ventricle

B) right atrium

C) right ventricle

D) left atrium

E) interatrial sulcus

21) Which chamber of the heart can generate the greatest pressure?

A) the left atrium

B) the left ventricle

C) the right atrium

D) the right ventricle

E) Both ventricles create greater pressures equally and simultaneously than do the atria.

22) Which of the following is a unique feature of the right ventricle?

A) mitral valve

B) papillary muscles

C) aorta

D) pulmonary trunk

E) trabeculae carneae

Explanation / Answer

Q18: A) Right ventricle has thinner muscular walls than does the left ventricle.Since left ventricle has to supply blood to the whole body while as right ventricle has to supply it to lungs only.

Q20:The moderator band is located in the right ventricle. This is a muscular band and is also referred to as (also septomarginal trabecula.

Q21: The left ventricle generates the highest pressure in the heart, since it has tro pump blood to every part in the body, including the brain to hands to toes.

Q22;The unique feature of right ventricle is the pulmonary trunk.This is the major vessel of the body and originates from right ventricle.

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