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ANAT 315 > Muscles (PA,DA, F, I) > Flashcards

Muscles (PA,DA, F, I) Flashcards

1
Q

What is the motor innervation for The Extrinsic Muscles of the Back (what layers)?

A

Anterior rami of Spinal Nerves + CNXI

Superficial and Intermediate

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2
Q

What is the motor innervation for The Intrinsic Muscles of the Back (what layers)?

A

Posterior rami of spinal nerves

Deep layer

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3
Q

Trapezius (Superficial)

A

PA: External occipital protuberance, Nuchal lig. and S.P C7-T12

DA: Scapula (spine + acromion) and lateral 1/3 of clavicle

F:
Fixed Scapula: Bilateral Neck Extension, Unilateral Ipsilat. Lat. Flex. and Contralat. Axial Rot. of head+neck

Upper: Elevation, Up. Rot
Middle: Retraction
Lower: Depression, Up. Rot

I: Spinal accessory n.

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4
Q

Latissimus Dorsi (Superficial Superficial)

A

PA: S.P T7-T12, Tx-Lx fascia, iliac crest

DA: Intertubercular groove of humerus

F:
Back: Bilaterally spine extension, Unilaterally Ipsi Lat Flexion of Lx spine
Scapula: Down. Rot, Depression
Shoulder: Medial Rot, ADD

I: Thoracodorsal n. (C6-C8)

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5
Q

Rhomboids (Superficial Intermediate)

A

PA: S.P C6-T4
DA: Medial Border of Scapula
F: Scapula: Retraction, Elevation, Down. Rot (Major)
I: Dorsal Scapular n. (C5)

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6
Q

Levator Scapulae (Superficial Intermediate)

A

PA: T.P C1-C4
DA: Sup. Angle of Scapula
F: Cx Spine (secondary): Bilaterally Extension, Unilaterally Ipsilat. Lat. Flex
Scapula (Primary): Elevation, Retraction (-)
I: Anterior rami of C3-C5

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7
Q

Serratus Posterior Superior (Superficial Deepest)

A

PA: Nuchal lig., S.P C7-T3
DA: Superior border ribs 2-4
F: Elevation of upper ribs (accessory respi) and proprioception
I: Anterior rami T2-T5

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8
Q

Serratus Posterior Inferior (Superficial Deepest)

A

PA: Tx-Lx Fascia and S.P T11-L2
DA: Inferior border ribs 8-12
F: Depression of lower ribs (accessory respi) and proprioception
I: Anterior rami T9-T12

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9
Q

Erector Spinae - Iliocostalis, Longissimus, Spinalis (Intrinsic intermediate)

A

PA: Ilium/Sacrum, vertebral processes/Supraspinous lig.
DA: Iliocostalis: Lower ribs & Cx T.P
Longissimus: Ribs, Cx-Tx T.P,
Mastoid process
Spinalis: Upper Tx S.P and
cranium
F: Bilaterally Extension of spine,
Unilaterally Lat. Flexion of spine (mostly iliocostalis)

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10
Q

Transversospinalis group - Semispinalis, Rotatores, Multifidus

A

PA: T.P
DA: S.P except semispinalis capitis
F: Bilaterally Extension of spine, Unilaterally Contra. Rot spine
I: Porterior rami

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11
Q

Intrinsic Muscles of the Back - Interspinalis, Intertransversarii, Levatores Costarum

A

I.S: Extension of Spine Assist
I.T: Ipsilat. Lat. Flex of spine Assist
L.C: Rib elevation, Ipsilat. Lat. Flex of spine Assist

I: Posterior rami

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12
Q

Splenius

A

Capitis
PA: Nuchal lig., S.P C7-T2
DA: Mastoid Process + Occiput

Cervicis
PA: S.P T3-T6
DA: T.P C1-C3 or C4

F: Bilaterally Extension of head + neck, Unilaterally Ipsilat. Lat. Flex + Rot of neck and head

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13
Q

Rectus Capitis Posterior

A

Minor
PA: Post. Tubercule C1
DA: Occiput
F: Bilaterally Extension of head

Major
PA: S.P C2
DA: Occiput
F: Bilaterally Extension of head, Unilaterally Ipsilat. Rot. of the head

I: Suboccipital nerve (post ramus of C1

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14
Q

Obliquus Capitis

A

Superior
PA: T.P C1
DA: Occiput
F: Bilaterally Extension of head, Unilaterally Ipsilat. Lat. Flex of head

Inferior
PA: S.P C2
DA: T.P C1
F: Unilaterally Ipsilat. Rot of neck

I: Suboccipital nerve (post ramus C1)

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15
Q

Sternocleidomastoid

A

PA: Mastoid Process
DA: Sternum, Clavicle
F: Bilaterally Extension of head+neck, Flexion of head (sternal head), Unilaterally Contralat. Rot and Ipsilat. Lat. Flexion
I: Spinal accessory (CN XI)

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16
Q

Rectus Capitis Lateralis & Anterior

A

PA: T.P C1
DA: Occipital Bone
F (Lateralis): Ipsilat. Lat Flex of head
F (Anterior): Flexion + Ipsilat. Rot of head
I: Anterior rami of C1-C2

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17
Q

Longus Capitis

A

PA: Transverse processes of ~C3–C6
DA: Base of skull (occipital bone)
F: Flexion of head
I: Anterior rami of C1–C3

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18
Q

Longus Colli

A

PA: Vert. Bodies of C5-T3
DA: Vert. Bodies & T.P of Cx Vert.
F: Flexion of Cx Spine
I: Anterior rami of C2-C6

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19
Q

Scalenes

A

Anterior
PA: T.P C3-C6
DA: Rib 1

Middle
PA: T.P C5-C7
DA: Rib 1

Posterior
PA: T.P C5-C7
DA: Rib 2

F: Elevation of ribs (1 or 2) during inspi, Flex of Cx Spine and Ipsilat. Lat. Flexion

I: Anterior rami of C3-C8

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20
Q

External Intercostal

A

From: Superior rib
To: Obliquely anteroinferior
F: Elevates ribs + sternum in Forceful Inspi

21
Q

Internal Intercostal

A

From: Inferior rib
To: Superior rib
F: Depresses ribs during forceful expi

22
Q

Innermost Intercostal

A

From: Inferior rib
To: Superior rib
F: Depresses ribs during forceful expi

23
Q

Transversus Thoracis

A

PA: Sternum body and Xiphoid Process
DA: Ribs 2-6
F: Depresses ribs during forceful expi

24
Q

Diaphragm

A

Peripheral Attachments: Circumference of Inferior Thoracic Aperture (Costal Margin, Xiphoid process, Ribs 6-12, L1-3 Vert)
Central Attachment: to itself via Central Tendon
F: Quiet Respiration
I: Phrenic Nerve anterior rami C3-C5

25
External Oblique
PA: Outer surface ribs 5-12 DA: Linea alba, pelvis (pubic tub, Ant iliac crest F: Contralat. Rot, Ipsilat. Lat Flexion I: Lower thoracoabdominal nerves + subcostal (ant rami T7-12)
26
Internal Oblique
PA: TxLx fascia, Iliac crest, ASIS DA: Inf. border ribs 10-12, Xiphoid, linea alba, Pubic tub, Iliac crest F: Ipsilat. Rot, Ipsilat. Lat Flexion I: Lower thoracoabdominal + subcostal + L1 (ant rami T7-L1)
27
Tranversus Abdominis
PA: TxLx fascia, Iliac crest, internal aspect of costal cartilage ribs 7-12 DA: Linea alba, Pubic crest F: Compressing abdominal content, increase abdominal pressure I: Lower thoracoabdominal nerves, subcostal nerve + L1 (ant rami of T6-L1
28
Rectus Abdominis
Inf. A: Pubic crest, Pubic symphisis Sup. A: External aspec of costal cartilages of ribs 5-7, Xiphoid process F: Trunk Flexion, Compression of abdominal contents I: Lower thoracoabdominal nerves + subcostal nerve (ant rami of T6-T12)
29
Psoas Minor
PA: T12-L1 DA: Pubic bone F in trunk: Lx Flexion assist, Ipsilat. Lat Flexion
30
Iliopsoas
Psoas Major PA: V.B T12-L5 Iliacus PA: Iliac fossa Iliopsoas: DA: Lesser trochanter F in trunk: Lx Flexion assist, Ipsilat. Lat Flexion I: L1-L3
31
Quadratus Lumborum
PA: Rib 12 and T.P of Lx vertebrae DA: Iliac crest F: Bilaterally Extension of Lx spine, Unilaterally Ipsilat. Lat. Flex I: T12 + L1-L4
32
Subclavius
PA: 1st rib DA: Clavicular groove F: Depression of clavicle, Stabilize sternoclavicular I: Subclavian (C5-C6)
33
Pectoralis Minor
PA: Ant. side of ribs 3-5 DA: Coracoid process F: Depression, Protraction and DW rotation of scapula I: Medial pectoral (C8-T1)
34
Serratus Anterior
PA: Lateral surface of ribs 1-9 DA: medial/anterior border of scapula F: Protraction of scapula I: Long thoracic (C5-C7)
35
Supraspinatus
PA: Supraspinous fossa DA: Greater tubercle F: Early ABD I: Suprascapular (C5-C6)
36
Teres Minor
PA: Inferior border of scapula DA: Greater tubercule F: ADD I: Axillary (C5-C6)
36
Infraspinatus
PA: Infraspinous fossa DA: Greater tubercle F: External Rot I: Suprascapular (C5-C6)
37
Subscapularis
PA: Subscapular fossa DA: Lesser tubercle of humerus F: Medial Rotation + ADD I: Sup + Inf Subscapular (C5-C6)
38
Deltoid
PA: Clavicular, Acromial, Spinal DA: Deltoid tuberosity F: Clavicular--> Flexion Acromial--> ABD Spinal--> Extension I: Axillary (C5-C6)
39
Teres Major
PA: Inferior angle DA: Medial lip of intertubercular groove F: Medial Rotation, ADD, Extension when shoulder flexed I: Lower subscapular (C5-C6)
40
Coracobrachialis
PA: Coracoid process DA: Medial 1/2 down of humerus F: Flexion, ADD, Medial rotation, Stabilization of GH joint I: Musculocutaneous (C5-C7)
41
Pectoralis Major
PA: Clavicle, Sternum, Ribs DA: Lateral lip of intertubercular groove F: ADD, Medial rotation I: Lateral (C5-C7) and Medial (C8-T1) pectoral
42
Biceps Brachii
PA: Long head: Supraglenoid tubercule Short head: Coracoid process DA: Radial tuberosity, Bicipital aponeurosis F: Flexion (elbow + GH), Supination, Protection of cubital fossa contents via bicipital aponeurosis I: Musculocutaneous C5-C7
43
Brachialis
PA: Anterior shaft of the humerus DA: Ulnar tuberosity F: Flexion I: Musculocutaneous C5-C7
44
Triceps Brachii
PA: Long head: Infraglenoid tubercle Lateral head: Posterior shaft of humerus ABOVE radial groove Medial head: Posterior shaft of humerus BELOW radial groove DA: Olecranon process F: Elbow Extension, Major antagonist to biceps brachii and brachialis, Long head (ADD + Ext GH) I: Radial (C5-T1)
45
Anconeus
PA: Posterior aspect of Lat Epicondyle PA: Olecranon process and Fibrous Capsule F: Elbow Extension + Stab, Prevents pinching of capsule during Extension
46
Brachioradialis
PA: Lateral supracondylar ridge DA: Styloid process of the radius F: Flexion I: Radial C5-T1
47

ANAT 315 (1 decks)

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