science................
Answers
Explanation:
3) a) RIB CAGE :- 24
b) SPINE :- 26
c) SKULL :- 14
4) Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
5) Ankle :- talocrural joint
Knees :- tibiofemoral joint
Elbow :- humeroulnar joint
Hips :- acetabulum
Shoulders :- glenohumeral joint and acromioclavicular joint
Skull :- Sutures
Neck :- cervical spine and hyoid bone
7) There are 9 types of joints they are :-
Ball and socket joint.
Hinge joint.
Condyloid joint.
Pivot joint.
Gliding joint.
Saddle joint.
Synarthroses
Amphiarthroses
Diarthroses
8) Muscles that are under your conscious control are called voluntary muscles. Muscles that are not under your conscious control are called involuntary muscles.
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