body fluid and circulation

Leeches secrete which of the following Anticoagulant ?

• Heparin

• Hirudin

• Histamine

• Serotonin

RBCs of mammals are

• non nucleated ,biconvex, circular

• nucleated ,biconcave, oval

• non nucleated, biconcave, circular

• non nucleated, biconvex and oval

Single circulation is found in

• frog

• man

• lizard

• fish

Opening of coronary artery is guarded by

• semilunar valve

• eustachian valve

• thebesian valve

• bicuspid valve

A certain road accident patient with unknown blood group needs immediate blood transfusion. his one doctor friend at once offers his blood ,what was the blood group of the donor?

• B

• AB

• A

• O

Which of the following has kidney shaped nucleus?

• Monocytes

• neutrophil

• lymphocytes

• eosinophils

The Haemoglobin content per 100 ml of blood of a normal healthy human adult is

• 5-6mg

• 25-30mg

• 17-20 mg

• 12-16 mg

There is no DNA in

• mature spermtozoa

• mature RBCs

• Immature RBCs

• hair root

Tendons of Papillary muscles are attached to walls of ventricles called

• AV valves

• myocardium

• Chordae tendinae

• Myonemes

Myogenic Heart is not found in

• frog

• cockroach

• octopus

• fish