Locomotion Flashcards

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1
Q

Examples of pseudopodial movement

A

Amoeba, WBCs, Macrophages

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2
Q

hair like projections of the specialised cells

A

cilia

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3
Q

how is cilia helping in the movement

A

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

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4
Q

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

A

Ciliated

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5
Q

what helps in the passage of the ova in oviduct cilia

A

motive force

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6
Q

outgrowth of cell membrane

A

cilia and flagella

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7
Q

use of flagellar movement

A

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

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8
Q

cilia is used by paramecium for

A

locomotion and ingestion

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9
Q

6 functions of locomotion

A

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

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10
Q

muscles originate from which germ layer

A

mesoderm

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11
Q

muscular tissues have specialized cells called

A

myocytes

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12
Q

these myocytes are bound together to form

A

connective tissue and also form muscular tissue

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13
Q

no of muscles in our body

A

689 muscles

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14
Q

unique properties of the muscles are

A

contractibility, excitability, elasticity and extensibility

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15
Q

muscles form ________ % of body weight

A

40 - 50

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16
Q

what is elasticity

A

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

17
Q

is stimulus required for excitation of muscles causing it to contract

A

yes

18
Q

a muscle is covered with a sheath of connective tissue

A

epimysium

19
Q

muscle fibres are arranged in bundles called

A

fasciculi

20
Q

fasculi is surrounded about another sheath of connective tissue called

A

perimysium

21
Q

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

A

endomysium

22
Q

muscle fibre are further bound by common collagenous sheath _______

A

fascia

23
Q

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

A

-> inelastic connective tissue

-> tendons

24
Q

one end of muscle is attached to the

A

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

25
Q

skeletal muscles

A

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

26
Q

smooth

A

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

27
Q

cardiac

A

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

28
Q

plasma membrane covering the muscle

A

sacrolemma which has the the sacroplasm which has many nuclei

29
Q
A