Body Movements
Chapter 8
Exercises (অনুশীলনী)
- Fill in the blanks:
(a) Joints of the nones help in the of ————— the body.
Ans:- Movement
(b) a combination of bones and cartilages forms the —————- of the body.
Ans:- jaws.
(c) The bones at the elbow are jhoined by a —————— joint.
Ans:- Hinge.
(d) The contraction of the ——————- pulls the bones during movement.
Ans:- muscle.
- Indicate true (T) and false (F) among the following sentences.
(a) The movement and locomotion of all animals is exactly the same.
Ans:- false.
(b) The cartilages are harder than nones.
Ans:- false.
(c) The finger bones do not have joints.
Ans:- false.
(d) The fore arm has two bones.
Ans:-
(e) Cockroaches have an outer skeleton.
Ans:-
- Match the items in Column 1 with one or more items of Column II.
Ans:- Upper elbow – unmanageable joints
Fish – dhara unstoppable body
The kamihad – maintains the liver
Kumjelakuwa – shows slow movement
Pistachios – there are birds in the body
Can fly in the air
There’s an external jaw
- Answer the following:
(a) What is a ball and socket joint?
Ans:- Some bones in the body appear in such a state – one round end of one bone is embedded in the spherical pit of another bone. In such a joint the bone can move around. This is called the ball and socket joint.
(b) Which of the skull bones are movable?
Ans:- The organs formed by the soft ness of the laokhola move.
(c) Why can our elbow not move backwards?
Ans:- Why can’t we turn the elbows back because we have a wrist joint on our elbows.