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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
What is the Function of the Flexor Carpi Radialis? What innervates it?
``` Function - Flexion of the wrist - Abduction of the wrist Innervation - Median Nerve ```
26
What is muscles Origin is the Medial Epicondyle of the Humerus and shaft of the radius? Where is its insertion?
Muscle - Flexor Digitorum Superficialis (FDS) Insertion - Sides of the middle phalanges of digits 2-5 via the FDS tendon
27
What is the Function of the Flexor Digitorum Superficialis (FDS)? What innervates it?
``` Function - Flexion of the wrist - Flexion of the MCP joint - Flexion of the Proximal Interphalangeal Joint Innervation - Median Nerve ```
28
What are the two muscles of the deep layer of the Anterior compartment of the Forearm?
- Flexor Digitorum Profundus (FDP) | - Flexor Pollicis Longus
29
What is the Origin and Insertion of the Flexor Digitorum Profundus (FDP)?
Origin - Shaft of Ulna Insertion - Distal Phalanges of Digits 2-5
30
What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?
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
What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?
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
What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?
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
What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?
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
What is the Function of the Flexor Digitorum Profundus (FDP)? What innervates it?
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
What Muscle has an origin point on the Shaft of the Radius and an Insertion Point on the Distal Phalanx of the Thumb?
- Flexor Pollicis Longus
34
What is the Function of the Flexor Pollicis Longus? What Innervates It?
Function - Flexor of the Thumb (prime mover) Innervation - Median Nerve
35
What are all the Muscles of the Posterior Compartment of the Forearm Innervated By?
- Radial Nerve
36
What is unique about the Brachioradialis?
- Located in anterior compartment but classified as posterior
37
What is the origin and insertion point of the Brachioradialis?
Origin - Above the lateral epicondyle of humerus Insertion - Styloid Process of the Radius
38
What is the Function of the Brachioradialis? What Innervates it?
Function - Flexor of the elbow Innervation - Radial Nerve
39
What muscles are in the Superficial Layer of the Posterior Compartment of the Forearm?
- Extensor Digitorum | - Extensor Carpi Ulnaris
40
What is the Origin and Insertion of the Extensor Digitorum?
Origin - Lateral Epicondyle of the Humerus Insertion - Middle and Distal Phalanges of Digits 2-5
41
What is the Function of the Extensor Digitorum? What Innervates it?
Function - Extension of the wrist and digits (prime mover) Innervation - Radial Nerve
42
What is the Origin and Insertion Point of the Extensor Carpi Ulnaris?
Origin - Lateral Epicondyle Insertion - 5th Metacarpal Bone
42
What is the Origin and Insertion Point of the Extensor Carpi Ulnaris?
Origin - Lateral Epicondyle Insertion - 5th Metacarpal Bone
43
What is the Function of the Extensor Carpi Ulnaris? What Innervates it?
Function - Adduction and extension of the wrist Innervation - Radial Nerve
44
What are the two muscles of the deep layer of the posterior compartment of the forearm?
- Supinator | - Extensor Pollicis Longus
45
What is the Origin and Insertion of the Supinator Muscle?
Origin - Ulna and Lateral Epicondyle Insertion - Shaft of the Radius
46
What is the Function of the Supinator Muscle? What Innervates it?
Function - Supination of the forearm Innervation - Radial Nerve
47
What is the Origin and Insertion Points of the Extensor Pollicis Longus?
Origin - Shaft of Ulna Insertion - Distal Phalanx of the Thumb
48
What is the Function of the Extensor Pollicis Longus? What Innervates it?
Function - Extension of the Thumb (prime mover) Innervation - Radial Nerve
49
What are the three muscle groups of the Hand?
- Thenar Group - Hpothenar Group - Central Group
50
What is the origin and insertion points of the Thenar Group Muscles?
Origin - Lateral carpal bones (e.g. Scaphoid / Trapezium) Insertion - Bones of the Thumbs
51
What is the Function of the Thenar Group Muscles? What innervates them?
Function - Movement of the Thumb (flexion, abduction, opposition) Innervation - Median Nerve (most muscles of the Thenar Group)
52
What is the Origin and Insertion Points of the Hypothenar Group?
Origin - Medial Carpal Bones Insertion - Bones of the 5th Finger
53
What is the Function of the Hypothenar Group Muscles? What innervates them?
Function - Flexion, Abduction, and Opposition of pinky Innervation - Ulnar Nerve
54
What are the two muscles in the Central Muscle Group of the Hands?
- Lumbricals | - Interosseus Muscles
55
What is the Origin and Insertion Points of the Lubricals?
Origin - Tendon of FDP (flexor Digitorum Profundus) Insertion - Middle and distal phalanges of digits 2-5
56
What is the Function of the Lumbricals? What innervates them?
``` Function - Flexion of the metacarpalphalangeal joint Innervation - Two are innervated by ulnar nerve - Two by the median nerve ```
57
What is the origin and insertion point of the Interosseus Muscles?
Origin - Metacarpal Bones Insertion - Proximal Phalnges of digits
58
What is the Function of the Interosseus Muscles? What Innervates them?
``` 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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