A&P - Muscle of the day list - A&P 1 Flashcards Preview

Anatomy & Physiology I > A&P - Muscle of the day list - A&P 1 > Flashcards

Flashcards in A&P - Muscle of the day list - A&P 1 Deck (35)
1

rectus femoris

O,I,A

named for the direction of it's fibers and it's location
O: AIIS (anterior inferior illiac spine)
I: Tibial tuberosity
A: hip flexion & knee extension

2

Vasti

Huge

Vastus lateralis
Vastus medialis
Vastus intermedius

3

Vastus medialis

A,O,I

A - extend the knee (tibiofemoral joint)
O - medial lip of the linea aspera
I - tibial tuberosity via the patella ligament

4

Vastus lateralis

A, O, I

A - extend the knee (tibiofemoral joint)
O - lateral lip of the linea aspera, gluteal tuberosity and greater trochanter
I - tibial tuberosity (via the patella and patellar ligament)

5

Vastus intermedius

A, O, I

A - extend the knee
O- anterior and lateral shaft of the femur
I - tibial tuberosity ( via the patella and patellar ligament)

6

Biceps femoris

Two heads femur

A, O, I

Origin or proximal attachment:
Long head - ischial tuberosity
Short head - linea aspera

Insertion or distal attachment: head of the fibula

Action
Long head- extend the hip and flex the knee
Short head - flex the knee

Biceps femoris is the lateral hamstring, the two medial hamstrings will be covered later

Named for its number of heads and origin

7

Trapezius

Divisions

Upper
Middle
Lower

Because their attachments and actions are different

8

Trapezius - three different parts

Upper fibers

A, O, I

A -
bilaterally: extend the head and neck
Unilaterally: elevate the scapula (scapulothoracic joint) & upwardly rotate the scapula (s/t) joint

O - superior nuchal line, EOP (external occipital protuberance) and nuchal ligament (axial)

I - lateral 1/3 clavicle (anterior surface/appendicular)

Named for its shape

9

Trapezius

Middle

O: Nuchal ligament at C6 spinal process (S.P.) C7 - T3

I: acromion process and spine of the scapula

A: retraction of the scapula (adduction)

10

Trapezius

Lower

O: S.P. of T4-T12

I: tubercle of the spine of the scapula

A: depression of the scapula (abduction)/ upward rotation of the scapula

11

Pectoralis major


A, O, I

Clavicular head

Clavicular head

O - medial half of the clavicle
I - distal attachment: lateral lip of the bicipital grove (intertubercular groove)of the humerus
A - flexion of the shoulder

Named for size and location

12

Pectoral major


A, O, I

Sternocostal head

O: (proximal/axial attachment)manubrium & body of sternum. 1st to 6 or 7 costal cartilages

I: (distal attachment) lateral lip of the bicipital groove of the humerus


A: extension of the shoulder

13

Pectoralis major

Actions of both heads - synergysts

- Adduction
- Horizontal adduction
- Medial rotation

14

Masseter


A, O, I

Named for

A - elevate the mandible (temporomanibular joint); may assist to protract the mandible (TM joint)

O - zygomatic arch

I - angle of the ramus of mandible

Named for it's action

15

Temporalis

A, O, I

Named for

A - elevate the mandible (TM joint); retract the mandible (TM) joint

O - temporal fossa and fascia (frontal, temporal & parietal bones)

I - coronoid process and anterior edge of ramus of the mandible


Named for location

16

Gluteus Maximus


A, O, I

O: posterior gluteal line of illum, posterior sacrum & coccyx, sacrotuberous ligament (sacrum to ischial tuberosity)

I: gluteal tuberosity on posterior femur, lateral condyle of tibia via illiotibial band or tract

A: extension of the hip

17

Gluteus medius

A, O, I

Named for

A-abduction of the femur at hip, medial rotation of the femur

I - greater trochanter

O - Posterior ilium between superior/posterior and middle/anterior gluteal lines

Named for size

18

Gluteus minimus


A, O, I

Named for

A - abduction of femur at the hip, medial rotation of femur

I - greater trochanter

O - gluteal surface between anterior/middle and inferior gluteal lines

Named for size

19

Sternocleidomastoid

SCM


A, I, O

Named for it's attachment. Sterno- sternum Clavicular- clavical mastoid - mastoid process

I: mastoid process of the temporal bone and lateral portion of the superior nuchal line of occiput

O: sternal head: top of the manubrium
Clavicular head: medial one third of the clavicle

Unilaterally: contralateral rotation of the head, ipsilateral flexion of the head/neck

Bilaterally: flexion of the neck, extension of the head

20

Deltoids

general

3 branches - anterior, middle and posterior
Named for shape

21

anterior deltoid

A, O, I

O - lateral 1/3 of clavicle

A- all fibers: abduct the shoulder joint
Anterior: flex the humerus, medially rotate the shoulder joint, horizontally adduct the shoulder joint

I- deltoid tuberosity

22

middle deltoid

A, O, I

O - acromion

I- deltoid tuberosity

A- all fibers: abduct the shoulder joint

23

Posterior deltoid

A, O, I

O - spine of the scapula
I - deltoid tuberosity

A - all fibers: abduct the shoulder joint

Posterior: extend the humerus, laterally rotate the shoulder joint, horizontally abduct the shoulder joint

24

Biceps brachii

A, O, I

Named for # heads and location
Brachii means arm

A- flex the elbow (radiolunar joint), supinate the forearm (radiolunar joint)

O- short head: coracoid process of scapula
Long head: supraglenoid tubercle of scapula

I- radial tuberosity

25

Flexor carpi radialis

A, O, I

Named for action and location

A: flexion of wrist and Abduction of wrist (towards radius)

I: base of 2nd and 3rd metacarpal

O: medial epicondyle of humerus via the flexor tendon

26

Flexor carpi ulnaris


A, I, O

I- base of 5th metacarpal, hamate, and pisiform

O- medial epicondyle of humerus via the flexor tendon (humeral head); olecranon process ulna (ulnar head)

A - wrist flexion and ulnar deviation or adduction of the wrist (combined action)

Named for location and action

27

Extensor carpi ulnaris

A, I, O

I- base of 5th metacarpal and hamate

O. - lateral epicondyle of humerus via the common extensor tendon and proximal posterior boarder ulna

A. - wrist extension and ulnar deviation or adduction of the wrist (combined action)

Named for location and action

28

Lattissimus dorsi

A, I, O

A- extend the shoulder, Adduct the shoulder, Medially rotate the shoulder

O - S.P. T8-L5, sacrum, iliac crest (external lip of posterior crest). Via the thoracolumbar aponeurosis

I - medial lip of the bicipital groove of humerus

29

Rhonboids

A, I, O

Minor

A-retraction of the scapula (adduction)

O-SP of C7 and T1

I-medial/vertebral border of the scapula level with the root spine of the scapula

Named for geometric shape

30

Rhomboid major

A, I, O

A- retraction of the scapula (adduction)

O- SP of T2 to T5

I-medial/vertebral border of the scapula between the spine and the inferior angle

Named for geometric shape

31

Gastrocnemius

A, I, O

A-flexion of the knee, plantar flexion of the ankle

O-condyles of the femur (medial and lateral)

I-calcaneus via the Achilles or calcaneal tendon

Named for shape and location

Gastro: belly, kneme: leg

32

Serratus anterior

A, I, O

A- protraction/abduction of the scapula

I- superior and inferior angle of the scapula and medial margin in between

O - Lateral aspect of 1st through 8-9 ribs

Named for shape and location

Serrat - saw like;
Weak muscle is a wing scapula

33

External obliques

A, I, O


A: unilateral: lateral flex vertebral column to the same side; rotate vertebral column to the opposite side
Bilaterally: flex the vertebral column

I: anterior part of the iliac crest, abdominal aponeurosis to linea alba, inguinal ligament

O: external surfaces of 5th to 12th ribs

Named for location: external and direction of fibers: oblique

34

Semitendinosus

A, I, O

A- flex the knee; extension of the hip

I- proximal, medial shaft of the tibia at pes anserinus tendon

O- ischial tuberosity

35

Semimembranosus

A, I, O

A- flex the knee; extend the hip

I- posterior aspect of the medial condyle of tibia

O - ischial tuberosity