Layers of Blood Vessels

Q.

In the human umbilical cord, are there 2 arteries and 1 vein, or 2 veins and 1 artery?

Q.

What are the 3 layers of arteries?

Q.

Which two arteries are equipped with valves?

Q.

The study of blood vessels is termed as:

1. Angiology

2. Cardiology

3. Haemetalogy

4. Histology

Q.

What is the structure of blood vessels?

Q.

Differentiate between an artery and a vein.

Q.

Blood is called river of life. Comment.

Q. Which of the following layers is thicker in arteries than the veins?

1. Tunica externa
2. Tunica interna
3. Tunica adventitia
4. Tunica media

Q.

Mark the pair of substances among the following which are essential for coagulation of blood.

1. Heparin and calcium ions

2. Calcium ions and platelet factors

3. Oxalates and citrates

4. Platelet factors and heparin

Q.

If blood flows in close circulation in veins and arteries then why we get blood out from anywhere we cut our body. Are veins and arteries present everywhere in my skin?

Q.

In foetuses, ductus arteriosus connects

1. Aorta and pulmonary artery

2. Aorta and pulmonary vein

3. Hepatic and pancreatic duct

4. Pulmonary artery and vein

Q. Assertion: The arteries are not collapsible when they are empty.
Reason: Arteries are situated deeply in the body.

1. Both the assertion and reason are true and the reason is the correct explanation for the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
3. Assertion is true but the reason is false
4. Reason is true but the assertion is false

Q.

Which artery is the closest to the surface of our body?

Q.

___________have thick walls and narrow lumen.

Q. What is the excretory product from the kidneys of reptiles?

Q.

Arteries connects veins to capillaries.

1. True
2. False

Q. Given below are figures of blood vessels. Identify them and select the correct option.

1. A - Artery, B - Capillary, C - Vein
2. A - Vein, B - Artery, C - Capillary
3. A - Artery, B - Vein, C - Capillary
4. A - Vein, B - Capillary, C - Artery

Q.

What connects arteries to veins?

Q.

Give one difference between the blood groups O and AB.

Q. Arteries are

1. thin-walled and blood flows in them under less pressure
2. thick-walled and blood flows in them under more pressure
3. thin-walled and engage in exchange of substances in the tissues
4. none of the above

Q. Identify Blood vessels depicted with X, Y and Z.

1. X - Artery, Y - Capillary, Z - Vein
2. X - Capilary, Y - Vein, Z - Artery
3. X - Vein, Y - Artery, Z - Capillary
4. X - Artery, Y - Vein, Z - Capillary

Q.

Endothelium is

1. fully permeable

2. selectively permeable

3. non-permeable

4. elastic in nature

Q.

Assertion: Blood coagulates in injured blood vessels.
Reason: Uninjured blood vessels release an anticoagulant heparin.

1. The assertion is true but the reason is false

2. Both assertion and the reason are true but the reason is not the correct explanation of the assertion.

3. Both assertion and the reason are true and the reason is the correct explanation of the assertion.

4. Both assertion and reason are false.

Q.

The chief nitrogenous waste in mammals is

1. ammonia

2. urea

3. uric acids

4. amino acids

Q.

Identify whether the following statements are true/false.

(iii) Process of coagulation starts with the release of a substance from RBCs.

1. True
2. False

Q. Which of the following is lined by squamous epithelium?

1. Myocardium
2. Both a and b are correct
3. Tunica interna
4. Endocardium

Q. Rejection of transplanted organ is prevented by regular use of

1. Calcitonin
2. Pyroxin
3. Cyclosporin
4. Thrombin

Q.

The middle part of the nephric tubule is

1. distal convoluted tubule

2. proximal convoluted tubule

3. loop of Henle

4. ducts of Bellini

Q.

Arteries and veins are joined by a network of ______________

Q. The cavities of alveoli in the lungs are lined by

1. columnar epithelium
2. cuboidal epithelium
3. squamous epithelium
4. stratified cuboidal epithelium