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ANSWERS TO SAQS
Subject: Biology / (Human Physiology)
Unit: Anatomy and Physiology of the Human Skeleton and
Muscles
Topic: Anatomy and Physiology of the Human Skeleton and
Muscles
Level: 3
SAQ 1:
1. What is the difference between vertebrates and invertebrates?
2. What is the difference between an external and internal skeleton?
3. List the key functions of the human skeleton?
4. What does the axial skeleton refer to?
5. What does the appendicular skeleton refer to?
Answers:
1. Invertebrates have no back bone. Vertebrates have a back bone.
2. The external skeleton is a lifeless deposit on the top of the epidermis.
The internal skeleton is made of living bones.
3. Movement, support, protection, blood cell production, storage of
chemical energy and storage of minerals.
4. Axial skeleton consists of the central body bones- skull, backbone,
and ribs.
5. Appendicular skeleton consists of the limb bones, shoulder, and hip
girdles.
, Subject: Biology / (Human Physiology)
Unit: Anatomy and Physiology of the Human Skeleton and Muscles
Topic: Anatomy and Physiology of the Human Skeleton and Muscles
Level: 3
ANSWERS TO SAQs
SAQ 2:
1. Label the diagram of the human skeleton.
2. What is bone marrow?
Answers:
1.
1. Skull (Cranium) 13.Ulna
2. Facial bones 14. Carpals (wrist bones)
3. Teeth 15.Metarcarpals
4. Mandible (jaw bone) 16. Phalanges (hand)
5. Clavicle (collar bone) 17. Femur
6. Scapula (shoulder blade) 18. Patella (knee cap)
7. Sternum (breastbone) 19. Tibia
8. Humerus 20. Fibula
9. Ribcage 21. Tarsals (ankle bones)
10. Spine 22. Metatarsals
11. Radius 23. Phalanges (foot bones)
12. Pelvis
2. Bone marrow contains mainly fat and a few scattered blood cells. Red
marrow is where red blood cells are made.
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