1) what is true about capillaries?

A) They are thickest of all blood vessels
B) They are permeable to dissolved substances
C) They exchange respiratory gases, nutrients and excretory products between blood and tissues.
D) Both B and C

Descending aorta and pulmonary trunks are
A- Muscular arteries
B- Arterioles major
C- Medium arteries
D- Elastic arteries

Which innermost layer of blood vessels keeps the inner surfaces smooth to prevent deep veinthrombosis
A-tunica intima
B-tunica media
C-tunica adventitia
D- None of these

Pain in heart muscle is called
A.Angina pectoris
B.myocardial infraction
C.myocardial tention
D.none of these

5) An aperture present between two auricles during embryonic stage is known as

A .foramen of ovale
B.foramen ovalis
C.carnae
D thebesian

Choose the wrong statement.
A) Wall of ventricle is thicker than that of aorta.
B) Pulmonary artery carries oxygenated blood and pulmonary vein carries deoxygenated blood.
C) Left atrium is a thin walled and low pressure chamber.
D) Blood from the left atrium enters the left ventricle through mitral valve.

7) Valve present on the end of opening of precavals or superior vena cava

A.Haversian valve
B.semi Lunar
C.tricuspid
D bicuspid valve

Blood vessel which supply the blood to wall of blood vessel
A bicuspid valve
B coronary valve
C tricuspid valve
D.vasso vassarium

9) Serum differs from blood in:

10) The most active phagocytic WBCs are:

11) Collecting of WBCs at the site of injury occurs due to:

Aorta pierces diaphragm at the level of
A. T8
B. T12
C. T10
D. C6.

Uterine artery is a branch of
A. Common iliac artery
B. External iliac artery
C. Internal iliac artery
D. Descending aorta

14) Which is the internal covering of heart which is fixed and cannot be separated

15) Which is the internal covering of heart which is fixed and cannot be separated

16) Active bone marrow in adult human being is about

17) Lymphatic system and circulatory system is joined in

18) Network of blood capillaries are known as

19) Slow action of heart is called

20) The condition of RBC which cling together and resemble as pile of coins is

21) Identify the correct pair

A .Accessory heart-found in insect
B Venous heart-found in fish
C. Tubular heart-found in cockroach
D pulsating heart-found in annelida and mollusca
E. all of the above

22) lining of inner wall of heart chambers is formed of__.

A) parital pericardium
B) endocardium
C) visceral pericardium
D) Myocardium

23) Dicrotic notch in aortic pressure curve is caused by closure of

A) Tricuspid valve
B) Aortic valve
C) Pulmonary valve
D) Mitral valve

24) Increase in heart rate is called

25) Chronotropic action of heart means:

26) Peripheral vascular resistance can be best given by

(a) pulse pressure as it corresponds to aortic compliance and stroke volume

(b) mean arterial pressure as it supplies blood to organs

(c) diastolic blood pressure as it leads to the decrease till mid-thoracic aorta

(d) systolic pressure as it causes an increase in the descending aorta

27) Rise in the carotid sinus pressure leads to

(a) reflex hypercapnia

(b) reflex hyperpnea

(c) reflex bradycardia

(d) reflex tachycardia

28) The reason for the dicrotic notch on the aortic pressure curve is

(a) contraction of aorta

(b) closure of the aortic valve

(c) rapid filling of the left ventricle

(d) closure of the pulmonary valve

29) This about second heart sound is incorrect

(a) it is occasionally split

(b) it is due to the closure of semilunar valves

(c) indicates the commencement of diastole

(d) it has a longer duration than the first sound

30) This is the reason why the SA node acts as heart’s pacemaker

(a) because it has a poor cholinergic innervations

(b) because it has a rich sympathetic innervations

(c) because of its capability of generating impulses

(d) because it generates impulses at the highest rate