X class 2nd unit N.S.

Section -1 (Answer all questions) 5x1=5

1) How big is your heart?

2) How is your heart protected both externally and internally?

3) What is the relation between rate of the pulse and number of heart beats.

4) Which type of blood circulation is shown in this schematic representation?

5) Why do higher animals not adopt diffusion and osmosis to transport materials?

Section-2 ( Answer any three questions) 3x2=6

6) Fill in the blanks with suitable words given: ( triangle , anterior, narrower,pear )

The heart is a -------------------------- shaped structure, -------------------------------- in outline,wider at the---------------------------------------------- end ------------------------------------------ at the posterior end.

7) In human circulatory system,some blood vessels carry blood away from the heart and some bring blood to the heart.What are the differences between these two types of blood vessels?

8) Observe the given diagram and answer the questions given.

1)Mention the name of the instrument being used?

ii) While using this instrument,the maximum and minimum readings to be noted respectively are?

iii) A man’s readings are represented as 90/120. Make a correction ,if you feel the way of representation is wrong.

9) How do you distinguish pulmonary artery fromaorta?

Section-3 ( Answer any one question) 1x4=4

10) Fill in the boxes to complete the mechanism of process of clotting of blood as shown in this picture

11) Observe the diagram and answer the following questions.

i) Draw arrow marks to show the path of flow of deoxygenated blood

ii) are the paths of blood shown in figure as 1 & 2 correct?

iii) When do you hear lub and dub sounds in heart beat?

lv) Identify the veins that carry oxygenated blood and label it as PV.

Answer all questions

Multiple choice questions 6x1/2 = 3

12) The superior vena cava collects blood from the following organs except -------------

A) arms B) abdomen C) head D) neck

13) The term cardiac refers to which organ in the body -------------

A) heart B) vein C) lymph D)capillary

14) The exchange of gases and nutrients between blood and tissues is a major function of --------

A) arteries B) veins C) arterioles D) capillaries

15) The whole process of cardiac cycle is approximately completed in --------seconds ---------

A) 0.8 B) 0.9 C) 0.10 D) 0.11

16) Edema is the swelling stage of ------------

A) neck B) hands C) legs D) head

17) The parallel system to transport tissue fluid into the main blood stream is -------

A) circulatory system B) lymphatic system C) excretory system D) digestive system

Fill in the blanks 10 x ½ = 5

18)The vitamin responsible for clotting of blood is -------------------------------------

19) The people who have B.P. more than normal during rest period are said to have -----------------------------

20) The blood vessels which supply blood to the muscles of heart are ------------------------------

21) the largest artery in our body is ------------------

22) The fluid formed after clotting of blood is --------------------------

23) An example for blood related genetic disorder is --------------------

24) In which type of circulatory system the blood vessels are absent___________________

25) With the discovery of ---------------------------------the idea of circulation of blood was complete

26 )” Pins and needles” is a sensation in the limbs developed by reduced flow of -------------------------

27) This activity is to measure ------------------------------------

Match the following 4 x ½ = 2

27) G. Fabrici ( ) a) stethoscope

28) Malpighi ( ) b) blood circulation

29) Laennac ( ) c) valves in veins in leg

30) Harvey ( ) d) capillaries