biology MCQs - 10th class Chapter 04 Mcqs

1

The framework of hard, articulated structures that provides physical support and protection is called?

A

Muscular system

B

Skeletal system

C

Nervous system

D

Circulatory system

2

The human skeleton is located inside the body and is therefore called an?

A

Exoskeleton

B

Hydrostatic skeleton

C

Endoskeleton

D

Outer skeleton

3

Which of the following is NOT a primary function of the skeletal system?

A

Protection

B

Support

C

Movement

D

Digestion of food

4

The cells of cartilage are known as?

A

Osteocytes

B

Chondrocytes

C

Fibroblasts

D

Myocytes

5

The fluid-filled space in which a cartilage cell lies is called a?

A

Matrix

B

Canal

C

Lacuna

D

Vessel

6

Which type of cartilage is found covering the ends of long bones, in the nose, and trachea?

A

Elastic cartilage

B

Fibrous cartilage

C

Hyaline cartilage

D

Spongy cartilage

7

Which type of cartilage is found in the epiglottis and pinna?

A

Elastic cartilage

B

Fibrous cartilage

C

Hyaline cartilage

D

Bony cartilage

8

The very tough and less flexible cartilage found in intervertebral discs is?

A

Elastic cartilage

B

Fibrous cartilage

C

Hyaline cartilage

D

Articular cartilage

9

What is the hardest connective tissue in the body?

A

Cartilage

B

Tendon

C

Ligament

D

Bone

10

The hard outer layer of a bone is called?

A

Spongy bone

B

Bone marrow

C

Compact bone

D

Periosteum

11

The soft and porous interior of a bone is called?

A

Compact bone

B

Spongy bone

C

Cartilage

D

Medullary cavity

12

What does spongy bone contain?

A

Only fat cells

B

Only nerves

C

Blood vessels and bone marrow

D

Only calcium

13

Mature bone cells are called?

A

Osteoblasts

B

Osteoclasts

C

Chondrocytes

D

Osteocytes

14

How many bones does the adult human skeleton consist of?

A

300

B

250

C

206

D

126

15

How many bones are in the axial skeleton?

A

126

B

80

C

206

D

54

16

Which of these components is part of the axial skeleton?

A

Pectoral girdle

B

Arms

C

Skull

D

Legs

17

How many bones make up the human skull?

A

14

B

8

C

26

D

22

18

The skull is composed of 8 cranial bones and how many facial bones?

A

8

B

10

C

12

D

14

19

How many bones are in the vertebral column?

A

22

B

24

C

26

D

33

20

The human chest is made of a sternum and how many ribs?

A

12 (6 pairs)

B

20 (10 pairs)

C

24 (12 pairs)

D

26 (13 pairs)

21

How many bones are in the appendicular skeleton?

A

80

B

206

C

126

D

60

22

The pectoral (shoulder) girdle is made of how many bones?

A

2

B

4

C

6

D

8

23

The pelvic (hip) girdle consists of how many bones?

A

2

B

4

C

6

D

1

24

How many bones are found in both hands combined?

A

27

B

30

C

54

D

60

25

A joint that allows no movement, like between skull bones, is called an?

A

Immoveable joint

B

Slightly moveable joint

C

Hinge joint

D

Ball-and-socket joint

26

The joints between the vertebrae are examples of which type of joint?

A

Immoveable joints

B

Slightly moveable joints

C

Hinge joints

D

Ball-and-socket joints

27

Which of the following is an example of a hinge joint?

A

Shoulder joint

B

Hip joint

C

Knee joint

D

Skull suture

28

The hip and shoulder joints are examples of?

A

Hinge joints

B

Ball-and-socket joints

C

Fixed joints

D

Slightly moveable joints

29

What type of tissue attaches muscles to bones?

A

Ligaments

B

Cartilage

C

Tendons

D

Adipose tissue

30

What type of tissue connects one bone to another at joints?

A

Tendons

B

Muscles

C

Nerves

D

Ligaments

31

The end of a muscle that is attached to an immoveable bone is called the?

A

Insertion

B

Origin

C

Flexor

D

Extensor

32

The end of a muscle attached to a moveable bone is called the?

A

Origin

B

Belly

C

Insertion

D

Tendon

33

When a muscle contracts and bends a joint, it is known as a?

A

Extensor muscle

B

Flexor muscle

C

Abductor muscle

D

Adductor muscle

34

When a muscle contracts and straightens a joint, it is known as a?

A

Flexor muscle

B

Relaxer muscle

C

Extensor muscle

D

Rotator muscle

35

The biceps muscle on the front of the upper arm is a?

A

Extensor

B

Flexor

C

Abductor

D

Rotator

36

The triceps muscle on the back of the upper arm is an?

A

Extensor

B

Flexor

C

Adductor

D

Stabilizer

37

The phenomenon where one muscle contracts and the other relaxes to cause movement is called?

A

Synergy

B

Contraction

C

Flexion

D

Antagonism

38

A bone disease in adults characterized by a decrease in bone density is?

A

Arthritis

B

Osteoporosis

C

Gout

D

Rickets

39

Osteoporosis is often caused by a deficiency of which hormone in older women?

A

Testosterone

B

Insulin

C

Estrogen

D

Growth hormone

40

The term 'arthritis' literally means?

A

Bone weakness

B

Inflammation in joints

C

Muscle pain

D

Tendon tear

41

Which type of arthritis is caused by the degeneration of cartilage at joints?

A

Gout

B

Rheumatoid arthritis

C

Septic arthritis

D

Osteo-arthritis

42

Which type of arthritis involves inflammation of the membranes at joints?

A

Osteo-arthritis

B

Rheumatoid arthritis

C

Gout

D

Fibrous arthritis

43

The accumulation of uric acid crystals in moveable joints causes?

A

Osteoporosis

B

Osteo-arthritis

C

Rheumatoid arthritis

D

Gout

44

Which part of the body does gout generally attack first?

A

Knee joints

B

Hip joint

C

Toe joints

D

Shoulder joints

45

How many bones are in the middle ear (ossicles) in total?

A

2

B

4

C

6

D

8

46

The matrix of bone contains collagen and minerals like calcium and?

A

Sodium

B

Potassium

C

Iron

D

Phosphate

47

Blood vessels do not enter which of these tissues?

A

Compact bone

B

Spongy bone

C

Cartilage

D

Muscle

48

How many bones are babies born with approximately?

A

206

B

270

C

300

D

150

49

Which bone protects the brain?

A

Vertebral column

B

Ribs

C

Sternum

D

Skull

50

Which structure protects the spinal cord?

A

Rib cage

B

Skull

C

Vertebral column

D

Pelvic girdle