Question

(A)In human heart the opening of right auricle and right ventricle is guarded by the:
(i) Mitral valve
(ii) Bicuspid valve
(iii) Alary muscles
(iv) Cardiac muscle
(B) Identify the W.B.C. which engulfs the disease-causing bacteria:
(i) Neutrophils
(ii) Monocytes
(iii) Lymphocytes
(iv) Basophils
(c) in human heart, the opening of right auricle and right ventricle is pure
worn-out red blood cells?​

Answer 1

Answer:

A)bicusped valve (B)lymphocytes (c)No,it's pure oxygenated RBC

Answer 2

Answer:

A ( ii) Bicuspid valve

B (ii) monocites

C The atrium (Latin ātrium, “entry hall”) is the upper chamber through which blood enters the ventricles of the heart. There are two atria in the human heart – the left atrium receives blood from the pulmonary (lung) circulation, and the right atrium receives blood from the venae cavae (venous circulation). The atria receive blood while relaxed (diastole), then contract (systole) to move blood to the ventricles. All animals with a closed circulatory system have at least one atrium. Humans have two atria.