Muscular System L6 Flashcards

1
Q

The muscles are of three types, Name them?

A

skeletal, smooth and cardiac

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2
Q

Site of skeletal muscles

A

Attached to the skeleton

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3
Q

Site of smooth skeleton?

A

Walls of hollow organs (e.g. stomach, intestine, urinary bladder, etc and in the walls of blood vessels).

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4
Q

Example of sites of smooth muscles?

A

stomach, intestine, urinary bladder, etc and in the walls of blood vessels

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5
Q

Site of cardiac muscle

A

Heart Muscle

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6
Q

Nerve supply in the skeletal muscles

A

Somatic nerve from the Cranial nervous system

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7
Q

Nerve supply in the smooth muscles

A

Autonomic nerve supply

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8
Q

Nerve supply in the cardiac muscles

A

Autonomic nerve supply.

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9
Q

Action in the cardiac muscles

A

Involuntary

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10
Q

Action in the smooth muscles

A

Involuntary

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11
Q

Action in the skeletal muscles

A

Voluntary

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12
Q

Examples of smooth muscles

A

Muscles of respiratory system, digestive system, Walls of the blood vessels

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13
Q

Examples of skeletal muscles

A

Muscles of the upper & lower limbs, back, abdominal wall

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14
Q

Skeletal muscles are usually described as having two attachments what are they

A

Origin
Insertion

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15
Q

the proximal end of the muscle and has less movement is?

A

Origin

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16
Q

The distal end of the muscle and has more movement

A

Insertion

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17
Q

Attachments may occur?

A

Fleshy
Tendon
Aponeurosis
Raphe

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18
Q

Rounded cord of fibrous tissue is the definition of?

A

Tendon

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19
Q

A flat sheet of fibrous tissue is?

A

Aponeurosis

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20
Q

Interdigitation of two flat muscles ?

A

Raphe

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21
Q

Classification according to arrangement of skeletal muscle fibres

A

Parallel (Strap)
Triangular (convergent)
Circular
Pennate
Fusiform

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22
Q

Sartorius muscle is an example for?

A

Parallel

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23
Q

Pectoralis Major muscle is an example for?

A

Triangular (convergent)

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24
Q

Orbicularis Oris muscle is an example for?

A

Circular

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25
Q

Biceps Brachii muscle is an example for?

A

Fusiform

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26
Q

The muscle has a triangular origin whose fibres converge on to a narrow tendon

A

Triangular (convergent)

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27
Q

These muscles appear circular in shape; sphincter muscles which surround an opening such as the mouth

A

Circular

28
Q

muscle fibres resemble a feather, are attached obliquely to sides of tendon.

A

Pennate

29
Q

More spindle shaped, with the muscle belly being wider than the origin and insertion

A

Fusiform

30
Q

Name all types of pennate muscles?

A

Unipennate
Bipennate
Multipennate
Circumpennat

31
Q

Extensor Digitorum Longus is an example for ?

A

Unipennate

32
Q

Rectus Femoris muscle is an example for ?

A

Bipennate

33
Q

Deltoid muscle is an example for ?

A

Multipennate

34
Q

Tibialis Anterior muscle is an example for ?

A

Circumpennate

35
Q

Deltoid muscle nerve supply is?

A

Axillary nerve

36
Q

Biceps brachii nerve supply is?

A

Musculocutaneous nerve

37
Q

Triceps brachii nerve supply is?

A

Radial nerve

38
Q

Gastrocnemius nerve supply is?

A

Tibial nerve

39
Q

Action of deltoid muscles is?

A

Abduction of shoulder to 90 degree

40
Q

Action of Biceps brachii muscle is?

A

Flexion of forearm at the elbow joint, shoulder joint & supination at radio-ulnar joint

41
Q

Action of Triceps brachii muscle is?

A

Extension of forearm at the elbow joint

42
Q

Action of Gastrocnemius muscle is?

A

Plantar flexion of the ankle joint
Flexion of the knee joint

43
Q

Clinical importance of Deltoid muscle?

A

Site of Intramuscular injection

44
Q

Clinical importance of Gluteus Maximus

A

Site of Intramuscular injections like deltoid

45
Q

Action of Gluteus Maximus is

A

Major extensor of hip joint

46
Q

Quadriceps femoris is 4 heads what are they?

A
  1. Rectus Femoris
  2. Vastus lateralis
  3. Vastus medialis
  4. Vastus intermedius
47
Q

Rectus Femoris Action is to

A

extends knee
flexes thigh

48
Q

Quadriceps femoris- 4 heads insertion is

A

patella, tibial tuberosity via patellar ligament

49
Q

Quadriceps femoris- 4 heads action is

A

extends knee

50
Q

Quadriceps femoris- 4 heads nerve supply is

A

Femoral nerve

51
Q

Related to the three main orifices of the face
(either sphincters or dilator)

A

Muscles of Facial Expression

52
Q

Muscles of mastication?

A

Temporalis
Masseter
Lateral pterygoid
Medial pterygoid

53
Q

All muscles of mastication takes origin from the …… and inserted in the ……

A

skull
mandible

54
Q

All muscles of mastication takes nerve supply from ?

A

the mandibular nerve

55
Q

All the muscles elevate the mandible Except the ?

A

lateral pterygoid depress the mandible

56
Q

All the muscles PROTRACT the mandible Except ?

A

Thr temporalis retract the mandible

57
Q

What moves the mandible side to side (chewing).

A

Medial & Lateral pterygoid

58
Q

All muscles of mastication act on?

A

Temperomandibular Joint

59
Q

Muscles of Anterior Abdominal Wall Consist of?

A

three broad thin aponeurotic sheets in front from exterior to interior

60
Q

The three broad thin aponeurotic sheets in Anterior Abdominal Wall are?

A

External oblique
Internal oblique
Transversus Abdomin
Rectus Abdominis

61
Q

Paralysis is ?

A

Loss of motor power

62
Q

lower motor neuron paralysis and malnutrition.

A

Muscular wasting /Atrophy

63
Q

Increase in size of cells, excessive use of particular
muscles

A

Hypertophy

64
Q

Painful, localized muscle spasm

A

Muscular spasm

65
Q

is caused by a ‘muscle pull’

A

Muscular spasm

66
Q

occur in tetanus and epilepsy

A

Muscular spasm

67
Q

Hyperplasia is

A

Increase in number of smooth muscle fibres