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CAPS 391 - Gross Human Anatomy > Muscles - Upper Limb > Flashcards

Muscles - Upper Limb Flashcards

1
Q

What are the muscles of the anterior compartment of the arm?

A
  • Biceps Brachii (Long Head and Short Head)

- Brachialis

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2
Q

What are the Anterior and Posterior Compartments of the arm separated by?

A
  • Intermuscular Septum
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3
Q

What innervates all the muscles on the anterior of the arm?

A
  • Musculocutaneous Nerve
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4
Q

What is the origin and insertion of the Long Head of the Biceps Brachii?

A

Origin
- Superior to Glenoid Cavity
Insertion
- Radial Tuberosity

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5
Q

What is the Function of the Long Head of the Biceps Brachii? What Innervates it?

A 
Function
- Flexion of the shoulder
- Flexion of the elbow
- Supination (prime mover)
Innervation 
- Musculocutaneous Nerve
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6
Q

What is the Origin and Insertion location of the Short Head of the Biceps Brachii?

A

Origin
- Coracoid Process
Insertion
- Radial Tuberosity

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7
Q

What is the Function of the Short Head of the Biceps Brachii? What Innervates it?

A 
Function
- Flexion of the Shoulder
- Flexion of the Elbow
- Supination (prime mover)
Innervation
- Musculocutaneous Nerve
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8
Q

What is the Origin and Insertion of the Brachialis?

A

Origin
- Shaft of Humerus
Insertion
- Ulnar Tuberosity

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9
Q

What is the Function of the Brachialis Muscle? What innervates it?

A

Function
- Flexion of the elbow (prime mover)
Innervation
- Musculocutaneous Nerve

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10
Q

What Innervates all of the Muscles on the Posterior compartment of the Arm?

A
  • The Radial Nerve
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11
Q

What are the three components of the Triceps Brachii?

A
  • Lateral Head
  • Long Head
  • Medial Head
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12
Q

What is the Origin and Insertion point of the Lateral Head of the Triceps Brachii?

A

Origin
- Shaft of Humerus
Insertion
- Olecranon Process of Ulna

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13
Q

What is the Function of the Lateral Head of the Triceps Brachii? What Innervates it?

A

Function
- Extension of the arm
Innervation
- Radial Nerve

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14
Q

What is the origin and Insertion point of the Long Head of the Triceps Brachii?

A

Origin
- Inferior to Glenoid Cavity
Insertion
- Olecranon Process of Ulna

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15
Q

What is the Function of the Long Head of the Triceps Brachii? What Innervates it?

A

Function
- Extension of the Arm
Innervation
- Radial Nerve

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16
Q

What is the Origin and Insertion point of the Medial Head of the Triceps Brachii?

A

Origin
- Shaft of Humerus
Insertion
- Olecranon Process of Ulna

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17
Q

What is the Function of the Medial Head of the Triceps Brachii? What innervates it?

A

Function
- Extension of the arm
Innervation
- Radial Nerve

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18
Q

What are the Three Layers of the Anterior Compartment of the arm?

A
  • Superficial Layer
  • Middle Layer
  • Deep Layer
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19
Q

What are the Anterior Muscles of the Forearm Innervated by?

A
  • Median Nerve
    or
  • Ulnar Nerve
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20
Q

What is the Flexor Retinaculum? what does it do?

A
  • Thick band of connective tissue that confines the tendons of the muscles of the anterior part of the forearm
  • Prevents the bowing oof the flexor tendons
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21
Q

What muscles are in the superficial layer of the anterior compartment of the forearm?

A
  • Pronator Teres

- Flexor Carpi Radialis

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22
Q

What is the Origin and Insertion point of the Pronator Teres?

A

Origin
- Medial Epicondyle of the Humerus
Insertion
- Shaft of Radius

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23
Q

What is the Function of the Pronator Teres? What innervates it?

A

Function
- Pronation of the forearm (prime mover)
Innervation
- Median Nerve

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24
Q

What is the Origin and Insertion Point of the Flexor Carpi Radialis?

A

Origin
- Medial Epicondyle of the Humerus
Insertion
- 2nd and 3rd metacarpal bones

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25
Q

What is the Function of the Flexor Carpi Radialis? What innervates it?

A 
Function
- Flexion of the wrist 
- Abduction of the wrist
Innervation
- Median Nerve
26
Q

What is muscles Origin is the Medial Epicondyle of the Humerus and shaft of the radius? Where is its insertion?

A

Muscle
- Flexor Digitorum Superficialis (FDS)
Insertion
- Sides of the middle phalanges of digits 2-5 via the FDS tendon

27
Q

What is the Function of the Flexor Digitorum Superficialis (FDS)? What innervates it?

A 
Function 
- Flexion of the wrist
- Flexion of the MCP joint 
- Flexion of the Proximal Interphalangeal Joint
Innervation
- Median Nerve
28
Q

What are the two muscles of the deep layer of the Anterior compartment of the Forearm?

A
  • Flexor Digitorum Profundus (FDP)

- Flexor Pollicis Longus

29
Q

What is the Origin and Insertion of the Flexor Digitorum Profundus (FDP)?

A

Origin
- Shaft of Ulna
Insertion
- Distal Phalanges of Digits 2-5

30
Q

What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?

A

Function
- Flexion of the Wrist
- Flexion of the Metacarpophalangeal Joints
- Flexion of Proximal and Distal Interphalangeal Joint (prime mover)
Innervation
- Ulnar and Median (half/half)

31
Q

What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?

A

Function
- Flexion of the Wrist
- Flexion of the Metacarpophalangeal Joints
- Flexion of Proximal and Distal Interphalangeal Joint (prime mover)
Innervation
- Ulnar and Median (half/half)

32
Q

What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?

A

Function
- Flexion of the Wrist
- Flexion of the Metacarpophalangeal Joints
- Flexion of Proximal and Distal Interphalangeal Joint (prime mover)
Innervation
- Ulnar and Median (half/half)

32
Q

What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?

A

Function
- Flexion of the Wrist
- Flexion of the Metacarpophalangeal Joints
- Flexion of Proximal and Distal Interphalangeal Joint (prime mover)
Innervation
- Ulnar and Median (half/half)

32
Q

What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?

A

Function
- Flexion of the Wrist
- Flexion of the Metacarpophalangeal Joints
- Flexion of Proximal and Distal Interphalangeal Joint (prime mover)
Innervation
- Ulnar and Median (half/half)

33
Q

What Muscle has an origin point on the Shaft of the Radius and an Insertion Point on the Distal Phalanx of the Thumb?

A
  • Flexor Pollicis Longus
34
Q

What is the Function of the Flexor Pollicis Longus? What Innervates It?

A

Function
- Flexor of the Thumb (prime mover)
Innervation
- Median Nerve

35
Q

What are all the Muscles of the Posterior Compartment of the Forearm Innervated By?

A
  • Radial Nerve
36
Q

What is unique about the Brachioradialis?

A
  • Located in anterior compartment but classified as posterior
37
Q

What is the origin and insertion point of the Brachioradialis?

A

Origin
- Above the lateral epicondyle of humerus
Insertion
- Styloid Process of the Radius

38
Q

What is the Function of the Brachioradialis? What Innervates it?

A

Function
- Flexor of the elbow
Innervation
- Radial Nerve

39
Q

What muscles are in the Superficial Layer of the Posterior Compartment of the Forearm?

A
  • Extensor Digitorum

- Extensor Carpi Ulnaris

40
Q

What is the Origin and Insertion of the Extensor Digitorum?

A

Origin
- Lateral Epicondyle of the Humerus
Insertion
- Middle and Distal Phalanges of Digits 2-5

41
Q

What is the Function of the Extensor Digitorum? What Innervates it?

A

Function
- Extension of the wrist and digits (prime mover)
Innervation
- Radial Nerve

42
Q

What is the Origin and Insertion Point of the Extensor Carpi Ulnaris?

A

Origin
- Lateral Epicondyle
Insertion
- 5th Metacarpal Bone

42
Q

What is the Origin and Insertion Point of the Extensor Carpi Ulnaris?

A

Origin
- Lateral Epicondyle
Insertion
- 5th Metacarpal Bone

43
Q

What is the Function of the Extensor Carpi Ulnaris? What Innervates it?

A

Function
- Adduction and extension of the wrist
Innervation
- Radial Nerve

44
Q

What are the two muscles of the deep layer of the posterior compartment of the forearm?

A
  • Supinator

- Extensor Pollicis Longus

45
Q

What is the Origin and Insertion of the Supinator Muscle?

A

Origin
- Ulna and Lateral Epicondyle
Insertion
- Shaft of the Radius

46
Q

What is the Function of the Supinator Muscle? What Innervates it?

A

Function
- Supination of the forearm
Innervation
- Radial Nerve

47
Q

What is the Origin and Insertion Points of the Extensor Pollicis Longus?

A

Origin
- Shaft of Ulna
Insertion
- Distal Phalanx of the Thumb

48
Q

What is the Function of the Extensor Pollicis Longus? What Innervates it?

A

Function
- Extension of the Thumb (prime mover)
Innervation
- Radial Nerve

49
Q

What are the three muscle groups of the Hand?

A
  • Thenar Group
  • Hpothenar Group
  • Central Group
50
Q

What is the origin and insertion points of the Thenar Group Muscles?

A

Origin
- Lateral carpal bones (e.g. Scaphoid / Trapezium)
Insertion
- Bones of the Thumbs

51
Q

What is the Function of the Thenar Group Muscles? What innervates them?

A

Function
- Movement of the Thumb (flexion, abduction, opposition)
Innervation
- Median Nerve (most muscles of the Thenar Group)

52
Q

What is the Origin and Insertion Points of the Hypothenar Group?

A

Origin
- Medial Carpal Bones
Insertion
- Bones of the 5th Finger

53
Q

What is the Function of the Hypothenar Group Muscles? What innervates them?

A

Function
- Flexion, Abduction, and Opposition of pinky
Innervation
- Ulnar Nerve

54
Q

What are the two muscles in the Central Muscle Group of the Hands?

A
  • Lumbricals

- Interosseus Muscles

55
Q

What is the Origin and Insertion Points of the Lubricals?

A

Origin
- Tendon of FDP (flexor Digitorum Profundus)
Insertion
- Middle and distal phalanges of digits 2-5

56
Q

What is the Function of the Lumbricals? What innervates them?

A 
Function
- Flexion of the metacarpalphalangeal joint
Innervation
- Two are innervated by ulnar nerve
- Two by the median nerve
57
Q

What is the origin and insertion point of the Interosseus Muscles?

A

Origin
- Metacarpal Bones
Insertion
- Proximal Phalnges of digits

58
Q

What is the Function of the Interosseus Muscles? What Innervates them?

A 
Function
- Palmar Interossei: Adduction of Digits
- Dorsal Interossei: Abduction of the Digits
Innervation
- Ulnar Nerve

CAPS 391 - Gross Human Anatomy (33 decks)

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