Chapter 20

Phallangeal formula of hand of man is (a) \(1,2,2,2,2\) (b) \(2,1,1,1,1\) (c) \(2,3,3,3,3\) (d) \(2,3,3,2,2\)

Appendicular skeleton includes all except (a) Hind limb (b) Fore limb (c) Amphicoelous vertebra (d) Pectoral and pelvic girdle

Patella is associated with (a) Elbow (b) Knee (c) Neck (d) Wrist

Which one of the cartilage helps in early birth of a child, without damage to the pelvic girdle? (a) Hyaline cartilage (b) Elastic cartilage (c) Calcified cartilage (d) Fibrous cartilage

The total number of bones in the hind limb of a man is (a) 14 (b) 21 (c) 24 (d) 30

Which of the following is an example of appendicular skeleton? (a) Bones of skull (b) Bones of vertebral column (c) Ribs (d) Bones of fore and hind limbs

The longest bone of human body is (a) Femur (thigh bones) (b) Tibia (c) Patella (knee cap) (d) Humerus

How many ankle bones are present in the human body? (a) 7 (b) 5 (c) 8 (d) 14

Each girdle of appendicular skeleton is made up of (a) Two halves (b) Three halves (c) Four halves (d) Five halves

Each of the pectoral girdle consists of (a) Clavicle (b) Scapula (c) Humerus (d) Both (a) and (b)

Which of the folowing is correct about clavicle? (a) Known as collar bone (b) Long bone (c) It has two curvatures (d) All of these

Scapula has slightly elevated ridge called the spine, which projects as a flat, expanded process known as (a) Coracoid (b) Greater tubercle (c) Acromion (d) Lesser tubercle

Joints are lubricated by (a) Epidermis (b) Dermis (c) Tympanic membrane (d) Synovial fluid

Ball and socket joints can be seen in (a) Wrist (b) Fingers (c) Neck (d) Shoulders

The knee joint in between the thigh and lower leg is a (a) Hinge joint (b) Gliding joint (c) Pivot joint (d) Fixed joint

When the head of humerus fits into glenoid cavity, the joint is (a) Ball and socket joint (b) Hinge joint (c) Pivot joint (d) Saddle joint

The joint between femur and tibio-fibula is (a) Hinge joint (b) Saddle joint (c) Pivot joint (d) Imperfect joint

Articulation of the atlas with the axis is an example of (a) Hinge joint (b) Ball and socket joint (c) Gliding joint (d) Pivot joint

Sutural joints are found between (a) Parietals of skull (b) Humerus and radius-ulna (c) Glenoid cavity and pectoral girdle (d) Thumb and metatarsal

Synovial joints is (a) Pivot joint (b) Hinge joint (c) Ball and socket joint (d) All of these

Which of the following pairs is correctly matched? (a) Hinge joint Between vertebrae (b) Gliding joint Between carpal and metacarpal of thumb (c) Cartilaginous joint \(-\) between carpels (d) Fibrous joint \(=\) Flat skull bones

Name the joint that lies between sternum and the ribs in humans? (a) Fibrous joint (b) Gliding joint (c) Cartilaginous joint (d) Angular joint

The shoulder and hip are (a) Pivot joint (b) Hinge joint (c) Ellipsoid joint (d) Ball and socket joint

Symphysis is made up of (a) Fibrocartilage (b) Synovial fluid (c) Elastic cartilage (d) Hyaline cartilage

Inflammation of joints due to the accumulation of uric acid crystals occurs in (a) Osteoporosis (b) Gout (c) Tetany (d) Rickets

Myasthenia gravis is (a) auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle (b) progressive degeneration of skeletal muscle mostly due to genetic disorder (c) rapid spasms (wild contractions) in muscle due to low \(\mathrm{Ca}^{++}\) in body fluid (d) inflammation of joints

Progressive degeneration of skeletal muscle, mostly due to genetic disorder, is (a) Osteoporosis (b) Gout (c) Tetany (d) Muscular dystrophy

Tetany is due to (a) low Ca \(^{2+}\) in body fluid (b) high \(\mathrm{Ca}^{2+}\) in body fluid (c) high concentration of uric acid in boy fluid (d) all

Name age-related disorder which is characterized by decreased bone mass and increased chances of fractures, also decreased level of estrogen is a common cause in it. (a) Osteoporosis (b) Gout (c) Tetany (d) Muscular dystrophy

Smooth muscle fibres are (a) cylindrical, unbranched, striated, multinucleate and voluntary (b) spindle-shaped, unbranched, non-striated, uninucleate and involuntary (c) cylindrical, unbranched, non-striated, multinucleate and involuntary (d) spindle-shaped, unbranched, striated, uninucleate and voluntary

Assertion: Ciliary movement occurs in most of our internal tubular organs which are lined by ciliated epithelium. Reason: Passage of ova through the female reproductive tract is also facilitated by the ciliary movement.

Assertion: All locomotions are movements but all movements are not locomotion. Reason: Movement is one of the significant features of living beings.

Assertion: Ball and socket joints are the most mobile joints. Reason: Synovial fluid is present here in synovial cavity such arrangement allows considerable movement.

Assertion: Arthritis or inflammation of a joint makes the joint painful. Reason: Some toxic substances are deposited at the joint.

Assertion: Movement of body parts serves to change the body posture. Reason: Body parts move in relation to the body axis.

Assertion: There are similarities between the locomotion of unicellular organisms and multicellular animal. Reason: Ciliary, flagellar and amoeboid movement occur in unicellular organisms.

Assertion: White muscle fibres have very less quantity of myoglobin. Reason: White muscle fibres have high number of sarcoplasmic reticulum.

Assertion: Skeleton helps in the blood cell formation. Reason: Blood flows through skeleton.

Assertion: Muscle contraction force increases with rise in strength of stimulus. Reason: This is due to increased contraction of individual muscle fibres with increase in stimulus strength.

Assertion: Muscle as a whole doesn't obey all or none law. Reason: Each muscle fibre contracts maximally whenever it contracts.

Assertion: Amoeba shows simple form of movement Reason: Streaming of protoplasm is found in amoeba

Assertion: Tentacles in hydra perform multiple functions Reason: Tentacles in hydra use for capture of prey as well as for locomotion.

Assertion: Macrophages and leucocytes in blood exhibit amoeboid movement Reason: They can form pseudopodia by streaming of protoplasm

Assertion: We can remove dust particle and some foreign substances inhaled along with the atmospheric air from trachea Reason: Trachea is lined with ciliated epithelium

Assertion: \(\mathrm{Ca}^{2+}\) ion plays important role in muscle contraction Reason: Calcium ion binds to subunit of troponin on actin filament and removes the masking of active sites for myosin

Assertion: Skeletal muscle fibre is a syncitium. Reason: Sarcoplasm of skeletal muscle fibre contain many nuclei.

Assertion: Skeletal muscles are striated muscles Reason: They have striped appearance under the microscope

Assertion: Smooth muscles are involuntary muscles Reason: Their activities are not under voluntary control of the nervous system.

Assertion: Myosin is structural protein but also act as enzyme. Reason: Myosin is use to form myofibril and can hydrolyse ATP.

Assertion: Repeated activation of skeletal muscle can lead to fatigue Reason: Accumulation of lactic acid occur due to anaerobic respiration