Circulatory System ICSE Progress Check Class-10 Concise Selina Biology

In the Ventricular Systole both the Atrio Ventricular valves are closed.


Progress Check-6

Circulatory System ICSE Progress Check Class-10 Concise Selina Biology

Page 104

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Question 1

Fill in the blanks

(i) The ……….. of

(ii) ……. carry ………….

(iii) Walls of …………….. cells.

(iv) The substance to and ………….

Answer :

(i) The veins have thin and less muscular walls and have thin pocket – shaped valves to prevent backflow of blood.

(ii) Artery carries blood to an organ and break up into arteriole ending in capillaries.

(iii) Walls of capillaries consist of a single layer of squamous epithelial cells.

(iv) The substances to and from the tissues diffuse through the walls of capillaries.


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Circulatory System ICSE Progress Check Class-10 Concise Selina Biology

Page 106

Question 1

Name the two major circulation of blood in the human body.

Answer :

Pulmonary Circulation and Systemic Circulation.

Question 2

From where to where do the following blood vessels carry blood ?

(i) Pulmonary artery

(ii) Renal artery

(iii) Posterior vena cava

(iv) Hepatic vein

(v) Hepatic portal vein.

Answer :

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(i) Pulmonary artery transports deoxygenated blood from the right ventricle of the heart to the lungs.

(ii) Renal artery transports oxygenated blood from the aorta to the kidneys.

(iii) Posterior vena cava transports deoxygenated blood from the lower parts of the body to the right atrium of the heart.

(iv) Hepatic vein transports deoxygenated blood from the liver to the posterior vena cava.

(v) Hepatic portal vein transports deoxygenated blood from the stomach and intestine into the liver from where it is transported by the hepatic vein to the posterior vena cava.

Question 3

Define portal vein.

Answer :

A vein that collects blood from one part of the body and distributes it in another through capillaries.


Progress Check-8

Circulatory System ICSE Progress Check Class-10 Concise Selina Biology

Page 108

Question 1

What is pulse ?

Answer :

The regular expansion of an artery caused by the ejection of blood into the arterial system by the contractions of the heart.

Question 2

what are the normal values of blood pressure in a normal human adult ?

Answer :

Normal blood pressure for adults is defined as a systolic pressure of less than 120 and a diastolic pressure of less than 80. This is stated as 120/80.

Question 3

Which kind of cell mostly found in lymph ?

Answer :

The white blood cells (WBC’s) are found in the lymph.

Question 4

List the three function of lymph.

Answer :

The lymphatic system has three major functions, which are :

(a) Tissue drainage

(b) Fat transport

(c) Immune responses.

Question 5

Name the two main lymphatic organs in humans.

Answer :

There are two primary lymphatic organs :

The red bone marrow and the thymus gland.

Question 6

Name the following :

(i) The smallest W.B.C.

(ii) Part of lymphatic system concerned with absorption of fats from the intestine.

(iii) A special lymphatic node on the sides of the neck.

Answer :

(i) Lymphocytes are the smallest white blood cells which are only slightly larger than the erythrocytes.

(ii) A lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestine.

(iii) Cervical lymph nodes.

 

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