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Anatomy Final Exam > UE Muscle Compart > Flashcards

UE Muscle Compart Flashcards

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1
Q

Anterior Compartment of the Arm are responsible for what type of Actions

A

Flexion.

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2
Q

Posterior Compartment of the arm are responsible for what type of actions

A

Extension of the elbow

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3
Q

Anterior compartments of the forearm are responsible for what type of actions

A

Flexion of wrist and fingers, pronation

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4
Q

Posterior Compartments of the Forearm Actions

A

Extension of wrist and fingers, supination

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5
Q

Extrinsic vs Intrinsic Muscle of the hand

A

Intrinsic muscle originate in the hand while the extrinsic muscle has its tendons on the hand but origin is not in the hand.

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6
Q

Where is the origin and insertion of Coracobrachialis

A

O: Coracoid Process of the Scapula
I: medial surface of Humerus shaft

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7
Q

Actions and Innervation of Coracobrachialis

A

Flexor of the arm (shoulder)

INNV: Musculocutaneous

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8
Q

Origin and Insertion of Brachialis

A

O: Anterior Humerus
I: Ulna

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9
Q

Action and Innervation of Brachialis

A

A: Flexor of forearm (elbow)
INNV: Musculocutaneous

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10
Q

Origin and Insertion of Biceps brachii

A

O: Scapula and long head passes through intertubercular sulcus
I: Radial tuberosity

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11
Q

Action and Innervation of Biceps Brachii

A

Action: Flexor and supinator of the forearm
Innv: Musculocutaneous nerve

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12
Q

Muscles that make up the Anterior Arm

A

Coracobrachialis, Brachialis, and Biceps Brachii

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13
Q

If our Musculocutaneous Nerve gets damaged, then we will be unable to do what type of Actions?

A

Flexor of the arm, Flexor and supinator of forearm.

Musculocutaneous Innervates Coracobrachialis, Brachialis, and Biceps Brachii

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14
Q

Action and Innervation of Triceps Brachii

A

Actions: Extensions of forearm (elbow)
Innv: Radial Nerve

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15
Q

What is one thing Brachialis unable to do?

A

Pivot because it has an insertion point to Ulna which has hinge joint only

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16
Q

Location of Radial Nerve in relation to “M”

A

Radial nerve is posterior to M, separated by Axillary Artery

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17
Q

What travels through the triangular interval

A

Radial nerve travels through the triangular interval and will come through in between medial and lateral heads of the triceps on the posterior side of the humerus. It travels with the PROFUNDA artery that supplies the posterior portion on the back side of the arm.

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18
Q

If there is a fracture in the mid shaft of the humerus, physician most likely to check for damage in where?

A

if innervation to the posterior arm was intact or now, because that’s where the radial nerve travels.

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19
Q

What travels through the Quadrangular Space>

A

Axillary nerve travels through that which innervates Deltoid Muscle and Teres minor. QS is located above the Triangular Interval. Also Posterior Circumflex artery travels with it, which is a third division of the axillary artery and was one of them that went around the humerus.

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20
Q

What is/are the muscles of the Posterior Compartment of the arm

A

Triceps Brachii

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21
Q

Anterior to the elbow joint formed by the borders of

A

Brachioradialis muscle (Lateral), Pronator Teres Muscle (medially), and Epicondyles of humerus (Imaginary line on the shaft of the humerus)

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22
Q

Cubital Fossa is made up of

A

Tendons of Biceps muscle, Median Nerve, Brachial Artery (medial to Biceps Tendon)

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23
Q

cubital Fossa is covered by

A

Bicipital Acponeurosis

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24
Q

What travels over the Bicipital Aponeurosis?

A

Median Cubital vein travels over the aponeurosis and connects the cephalic (Lateral) and basilic veins.

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25
what travels directly beneath the brachioradialis?
Radial Nerve
26
What passes posterior to the medial epicondyle?
Ulnar nerve
27
Which is the ONLY nerve that goes through the Cubital Fossa?
Median Nerve
28
Common origin for Superficial Muscles of Anterior Compartment of the forearm
near the medial humerus
29
Action of Flexor Carpi Ulnaris
Powerful flexor of wrist and also adducts hand
30
Innervation of Flexor Carpi Ulnaris
Ulnar Nerve
31
Insertion of Palmaris Longus
Attaches to Palmar Aponeurosis of hand. Palmar Aponeurosis is a triangular deep fascia over the palm, extending to the digits.
32
What muscles of Superficial Anterior foramen are innervated by Median Nerves?
Pronator Teres, Flexor carpi Radialis, and Palmaris Longus
33
Actions of Flexor Carpus Radialis
Powerful flexor of wrist, and abducts hand.
34
Action of Pronator Teres
Pronates Foramen and weak flexor of elbow.
35
Action of Palmaris Longus
Tenses skin and fascia of palm during hand movements
36
Origin and Insertion of Flexor digitorum superficialis
O: Medial humerus and radius I: Middle Phalanges of digits 2-5
37
Action of Flexor Digitorum Superficialis
Flexes digits ar metacarpal-phalangeal joint and PIP
38
Innervation of Flexor Digitorum Superficialis
Median Nerve
39
Action of Flexor Digitorum Profundus
Flex DIP, PIP, MCP and wrist join.
40
Which muscle gets innervated by both Ulnar and median nerve?
Flexor digitorum profundus
41
Origin of Deep muscles of Anterior Compartment
forearm and interosseous membrane
42
Insertion and Action of Flexor pollicis longus
Inserts on phalanx of thumb and flexes the interphalangeal joint and MCP
43
Action of Pronator quadratus
Pronation of forearm
44
Innervation of Pronator quadratus
Median Nerve
45
How is Flexor digitorum Profundus different from Flexor digitorum superficialis?
Superficialis one can only flex upto PIP, but Profundus can flex PIP and DIP as well.
46
Innervation for Superficial Posterior Compartment of the Forearm
Radial Nerve
47
Which muscle is known as the accessory flexor of the elbow?
Brachioradialis
48
What Innervates Brachioradialis?
Radial Nerve
49
Actions of Extensor Carpi Radialis longus and Radialis Brevis? Innervation?
Extends and Abduction of the wrist | INNV: Radial Nerve
50
Insertion of Extensor Carpi Radialis longus and Brevis
Run from lateral humerus to lateral metacarpals. Brevis is shorter than longus and bit posterior to it
51
Actions and Innervation of Extensor Carpi Ulnaris
Extends and Abducts Wrist | INNV: radial nerve
52
Insertion of Extensor digitorum and digiti minimi
Runs from lateral humerus to phalanges of digits 2-5 and 5, respectively
53
Action and Innervation of Extensor Digitorum and Digiti minimi?
Extensors of digits 2-5 and 5, respectively. | INNV: Radial Nerve
54
What muscle of the forearm sits posterior to Elbow Joint
Anconeus (Superficial Posterior Compartment)
55
Common Innervation of Deep Muscles of Posterior Forearm
Radial Nerve
56
Muscles that make up the Superficial Posterior Compartment
Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis, Extensor Carpi Ulnaris, Extensor digitorum and digiti minimi, Anconeus, and Brachioradialis
57
Insertion of the Extensor Pollicis Longus and Brevis
Insert on distal and proximal plalanx of thumb respectively
58
Action of the Extensor Pollicis Longus and Brevis
Extend joints of the thumb
59
Action of Extensor Indicis
Extends index finger
60
Action of Abductor Pollicis Longus
Abducts and extends thumb
61
Action of Supinator
Assists biceps brachii to forcibly supinate forearm
62
Contents that make up the Carpal Tennel
Tendons of flexor digitorum profundus, Tendons of flexor digitorum superficialis, Tendon of flexor pollicis longus, and Median Nerve
63
ONLY nerve that travels THROUGH the Carpal Tunel
Median Nerve
64
What closes off the carpal bones to make it into a carpal tunnel
Flexor Retinaculum
65
Effects of the Carpal Tunnel Syndrome
Increased pressure in the carpal tunnel due to Carpal Tunnel Syndrome, leads to compression of the median nerve. The distal innervation of the median nerve past the carpal tunnel is where we are going to see deficits related to carpal tunnel syndrome.
66
One place in hand to feel the Radial Artery Pulse
Anatomical Snuff Box
67
Boundaries that make up the Anatomical Snuff Box
Extensor Pollicis longus and brevis tendons
68
Bones that form the Bone of the Anatomical Snuff Box
Scaphoid and Trapezium of Carpals
69
Difference between Extrinsic and Intrinsic Muscles in terms of Innervation
Extrinsic Muscles Innervation: Median, Ulnar, and Radial Nerves Intrinsic Muscles Innervation: Ulnar and Median nerves
70
Main Action of Extrinsic Muscles of the Hand
Power Grip
71
Main Action of Intrinsic Muscles of the Hand
Fine movement and Precision grip
72
Location and Action of Pulmaris Brevis
Very Superficial, medial side of the hand. Small quadrangular muscle over the hypothenar eminence. Helps to tighten the Palmar aponeurosis and Improve grip.
73
What innervates Palmaris Brevis
Ulnar Nerve
74
Origin and Insertion of Adductor Pollicis
Origin: midline of the hand; Insertion: thumb
75
Action of Adductor Pollicic
Adducts (moves toward the midline) thumb
76
Innervation for Adductor Pollicis
Ulnar nerve
77
What muscles make up the Interossei compartment of the hand
Interossei muscles run between the metacarpals. Dorsal Interossei (DABB) and Palmar Interossei (PAD) makes up the interossei muscles.
78
How many muscles make up the Dorsal and Palmar interossei? Actions?
Dorsal- DABB- 4 muscles- aBduction of digits 2-4 | Palmar- PAD- 3 muscles- aDduction of digits 2,4,5
79
Interossei Muscle Innervated by
Ulnar Nerve
80
Action of Lumbricals
Flexion at MCP point and extensions PIP and DIP joint of digits 2-5.
81
Innervation of Lumbricals
Medial 2 muscles innervated Ulnar nerve and lateral 2 muscles are innervated by median nerve.
82
Thumb side lateral to the Lumbricals are innervated by
Median Nerve
83
What muscles make up the thenar group
Opponens Pollicis, Flexor Pollicis Brevis, and Abductor Pollicis Brevis
84
Innervation of the Thenar Group
Median Nerve
85
Action of Opponens Pollicis
Opposition of thumb
86
Action of Flexor Pollicis Brevis
Flexes Thumb at MCP joint
87
Action of Abductor pollicis Brevis
Abducts Thumb at MCP joint
88
When grabbing a water bottle, what muscle is responsible to have that grip around the water bottle?
Thenar Group muscles
89
Innervation for the HypoThenar Group
Ulnar Nerve
90
Action of Opponens digit minimi
Opposition at digit 5
91
Action of Flexor digit minimi brevis
Flexes digit 5 at MCP joint
92
Action of Abductor digiti minimi
aBductor of digit 5

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