Gr 10 Animal support systems

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Topic 6 revision

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Mrs Arlow

Mrs Clulow

Mrs Vissian

Ms Viljoen

1. Advantages of an exoskeleton include... *

provision of support and attachment for muscles

they are thin and flexible at the joints for rapid movement

chiton can grow and stretch as the animal grows

options 1 and 2

All of the above

2. A disadvantage of an endoskeleton is that... *

the body is flexible due to joints

it protects internal organs

repair takes extended timeframes

there are more positions for muscle attachment, improving muscle power

3. Which of the animal tissues depicted below, represents bone? *

4. Which one of the following does NOT form part of the appendicular skeleton? *

tibia

ulna

clavicle

sternum

5. Study the x-rays below, showing frontal and side view of the injury. The patient fell, landing on his hands and knees. Which bone is fractured? *

Radius

Ulna

Tibia

Fibula

6. Study the diagram of a long bone below and provide the correct labels for the parts labelled A, B, C and D respectively. *

Head, Compact bone, Endosteum, Cartilage

Cartilage, Spongy bone, Endosteum, Periosteum

Head, Spongy bone, Red bone marrow, Endosteum

Cartilage, Red bone marrow, Yellow bone marrow, Endosteum

7. What type of synovial joint is depicted below. *

Hinge

Pivot

Ball-and-socket

Gliding

8. Lesley bends her leg, as seen depicted below. The antagonistic pair of muscles are shown. Which one of the following actions produces the movement? *

Contraction of the quadriceps and relaxation of the hamstrings

Contraction of the hamstrings and relaxation of the quadriceps

Contraction of the quadriceps and contraction of the hamstrings

Relaxation of the hamstring and contraction of the quadriceps

9. What is the function of a ligament? *

To join muscles to tendons

To join muscles to bones

To join the cells in compact bone closer together

To join bones to bones

10. What makes bones strong? *

Blood and marrow

Collagen

Calcium and phosphorous salts

Calcium and sodium salts

11. The largest unit of muscle contraction is the... *

Sacrolemma

Sacroplasm

Sarcomere

Sacrofibril

12. What skeletal health condition/disease is depicted in the image below? *

Rickets

Osteoarthritis

Osteoporosis

Fracture

13. Study the image below and provide labels for the parts of the human skull labelled A, C, D and E, respectively. *

Cranium, Mandible, Teeth, Orbit

Suture, Mandible, Maxilla, Cranium

Suture, Maxilla, Mandible, Forehead

Foramen magnum, Mandible, Maxilla, Cranium

14. Study the images below. Using the letters only, identify which animals have hydrostatic skeletons *

E, F

B, E

A, E

A, F

15. How many lumbar vertebrae are there in the human skeleton? *

Five

Seven

Twelve

Four

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