Free Body Fluids And Circulation (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Find out the incorrect statement from the following.

(a) Because of their small size, capillaries contain blood that is moving more quickly than in other parts of the circulatory system.

(b) Veins are typically larger in diameter than arteries.

(c) The walls of arteries are elastic, enabling them to stretch and shrink during changes in blood pressure.

(d) Veins contain more blood than any other part of the circulatory system.

Question-2

Rate of heart beat is determined by

(a) Purkinje fibres

(b) AV node

(c) papillary muscles

(d) SA node.

Question-3

Atheroma consist mainly of

(a) cholesterol and lipid hardened by calcium

(b) glycogen and protein hardened by calcium

(c) cholesterol and lipid hardened by iron

(d) glycogen and protein hardened by iron

Question-4

Uricotelism is found in

(a) Frogs and toads

(b) Birds, reptiles and insects

(c) Mammals and birds

(d) Fishes and freshwater protozoans

Question-5

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

(a) Blood plasma

(b) Whole blood from pulmonary vein

(c) Blood serum

(d) Sample from the thoracic duct of lymphatic system

Question-6

Bundle of His is a network of

(a) muscle fibres found only in the ventricle wall

(b) muscle fibres distributed throughout the heart walls

(c) nerve fibres distributed in ventricles

(d) nerve fibres found throughout the heart

Question-7

In mammals, which blood vessel would normally carry largest amount of urea?

(a) Hepatic portal vein

(b) Hepatic vein

(c) Renal vein

(d) Dorsal aorta

Question-8

The given figure describes the diagrammatic representation of standard ECG

Column I	Column II
A. P-wave	I. Ventricular depolarization followed by ventricular contraction
B. QRS complex	II. Atrial depolarization followed by systole of both atria
C. T-wave	III. Ventricular repolarization followed by ventricular relaxation

(a) A–III, B–II, C–I

(b) A–I, B–II, C–III

(c) A–II, B–I, C–III

(d) A–II, B–III, C–I

Question-9

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

(a) Peak T - initiation of total cardiac contraction

(b) Complex QRS - one complete pulse

(c) Peak P and peak R together - systolic and diastolic blood pressures

(d) Peak P- initiation of left atrial contraction only

Question-10

In normal human blood pressure, what does the "120" represent?

(a) The lowest pressure in the arteries that will keep someone from fainting when they stand up.

(b) The maximum pressure that can be sustained by the arteries before bursting.

(c) The highest ideal arterial pressure for someone at rest.

(d) The pressure in the veins.