Locomotion

Question 1

Examples of pseudopodial movement

Answer 1

Amoeba, WBCs, Macrophages

Question 2

hair like projections of the specialised cells

Answer 2

cilia

Question 3

how is cilia helping in the movement

Answer 3

it has oar like activity creating a water current which helps in the movement of various structures

Question 4

tubular structures like reproductive tract and respiratory tracts are lined with what epithelium

Answer 4

Ciliated

Question 5

what helps in the passage of the ova in oviduct cilia

Answer 5

motive force

Question 6

outgrowth of cell membrane

Answer 6

cilia and flagella

Question 7

use of flagellar movement

Answer 7

swimming of spermatozoa, maintenance of water current in canal system, locomotion in spermatazoa

Question 8

cilia is used by paramecium for

Answer 8

locomotion and ingestion

Question 9

6 functions of locomotion

Answer 9

1) food
2) building shelters
3) protection from predators
4) migration
5) searching breeding ground
6) finding a mate

Question 10

muscles originate from which germ layer

Answer 10

mesoderm

Question 11

muscular tissues have specialized cells called

Answer 11

myocytes

Question 12

these myocytes are bound together to form

Answer 12

connective tissue and also form muscular tissue

Question 13

no of muscles in our body

Answer 13

689 muscles

Question 14

unique properties of the muscles are

Answer 14

contractibility, excitability, elasticity and extensibility

Question 15

muscles form ________ % of body weight

Answer 15

40 - 50

Question 16

what is elasticity

Answer 16

property of shortening and returning to relaxed state of muscle fibre, they can shorten by 1/3 to 1/2 of their length

Question 17

is stimulus required for excitation of muscles causing it to contract

Answer 17

yes

Question 18

a muscle is covered with a sheath of connective tissue

Answer 18

epimysium

Question 19

muscle fibres are arranged in bundles called

Answer 19

fasciculi

Question 20

fasculi is surrounded about another sheath of connective tissue called

Answer 20

perimysium

Question 21

muscle fibres are parallel to each other and they are surrounded by _______

Answer 21

endomysium

Question 22

muscle fibre are further bound by common collagenous sheath _______

Answer 22

fascia

Question 23

two ends of muscles are attached to the bone with the help of ____________________ and are called _________

Answer 23

-> inelastic connective tissue

-> tendons

Question 24

one end of muscle is attached to the

Answer 24

fixed or less movable bone and other end is attached to more movable bone`

Question 25

skeletal muscles

Answer 25

attached to the skeletal component of the body straited/ striped/ voluntary alternate light and dark bands innervated by cranial and spinal nerves and abundant blood supply and mitochondria and myoglobin intercalated disc absent and striations and conspicuous multinucleated

Question 26

smooth

Answer 26

elongated spindle shaped broad form the center an tapering toward the ends. no alternate light and dark bands not organised in parallel arrays eg. lining of the hollow organs transportation of food through the digestive tract and the gametes through the genital tract due to contraction of smooth muscles spindle shaped, absent intercalated disc, autonomic nervous system innervation , poor blood supply and myoglobin and mitochondria, do not fatigue and gap junction are present in a SINGLE UNIT SMOOTH MUSCLES but not MULTI UNIT SMOOTH MUSCLES uninucleate

Question 27

cardiac

Answer 27

alternate light and dark bands , cells of cardiac muscles assemble in branching pattern, involuntary , generate their own impulse help in increasing or decreasing the rate of muscular activity cylindrical muscles, branched, rich blood supply, innervated by autonomic nervous system, intercalated disc present, uninucleate, abundant mitochondria and myoglobin, do not fatigue , gap junctions present between the fibres

Question 28

plasma membrane covering the muscle

Answer 28

sacrolemma which has the the sacroplasm which has many nuclei