The muscular system major movers and shakers
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The Muscular System Major Movers and Shakers. BIOL 2400 – Anatomy and Physiology 1 Chapter 11. Temporalis. O: Temporal bone I: Coronoid process and ramus of the mandible A: Elevation of the mandible. Click for Answer. Orbicularis oculi. O: Medial wall of the orbit

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The Muscular System Major Movers and Shakers

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The muscular system major movers and shakers

The Muscular System Major Movers and Shakers

BIOL 2400 – Anatomy and Physiology 1

Chapter 11


The muscular system major movers and shakers

Temporalis

O: Temporal bone

I: Coronoid process and

ramus of the mandible

A: Elevation of the

mandible

Click for Answer


The muscular system major movers and shakers

Orbicularis

oculi

O: Medial wall of the orbit

I: Medial wall of the orbit

A: Closes the eyelid

Click for Answer


The muscular system major movers and shakers

Orbicularis

oris

O: Opening of the mouth

I: The skin at the corners

of the mouth

A: Closes the mouth

Click for Answer


The muscular system major movers and shakers

Masseter

O: Maxilla and the

anterior portion of the

zygomatic arch

I: Angle and the ramus

of the mandible.

A: Elevation of the

mandible

Click for Answer


The muscular system major movers and shakers

Zygomaticus

major

O: Zygomatic bone

I: The skin at the corners

of the mouth and the

orbicularis oris

A: Elevates the skin at

the corners of the

mouth (smiling)

Click for Answer


The muscular system major movers and shakers

Depressor anguli

oris

O: Anterior 1/3 of the body of the mandible, lateral to the mental foramen

I: Angle of the mouth

A: Draws the angle of

the mouth laterally

and inferiorly, as in

opening the mouth

Click for Answer


The muscular system major movers and shakers

Supraspinatus

O: The supraspinous fossa of the scapula

I: The greater tubercle of the humerus

A: Weak ABduction of the

shoulder joint

Click for Answer


The muscular system major movers and shakers

Infraspinatus

O: The infraspinous fossa of the scapula

I: The greater tubercle of the humerus

A: Lateral rotation of the

humerus

Click for Answer


The muscular system major movers and shakers

Teres

minor

O: Inferior lateral border of the scapula

I: The greater tubercle of the humerus

A: Lateral rotation of the

humerus

Click for Answer


The muscular system major movers and shakers

Pectoralis

minor

O: Ribs 3 through 5

I: The coracoid process of the scapula

A: Protraction of the

scapula

Click for Answer


The muscular system major movers and shakers

Rhomboid

major

O: The spinous processes of T2 through T5

I: The vertebral border of the scapula, inferior to the spine

A: Retraction of the

scapula

Click for Answer


The muscular system major movers and shakers

Rhomboid

minor

O: The spinous processes of C7 through T1

I: The vertebral border of the scapula, superior to the spine

A: Retraction of the

scapula

Click for Answer


The muscular system major movers and shakers

Levator

scapulae

O: The transverse processes

of C1 through C4

I: The superior angle of the scapula

A: Elevation of the

scapula

Click for Answer


The muscular system major movers and shakers

Supinator

O: The lateral epicondyle of the humerus

I: The lateral surface of the proximal third of the radius

A: Supination of the forearm

Click for Answer


The muscular system major movers and shakers

Pronator

teres

O: The medial epicondyle of the humerus and the coronoid process of the ulna

I: The midlateral surface of the radius

A: Pronation of the forearm

Click for Answer


The muscular system major movers and shakers

Triceps

brachii

O: Long head: the inferior margin of the Glenoid fossa

Lateral head: the lateral, posterior surface of the humerus

Medial head: the posterior surface of the humerus

I: The olecranon of the ulna

A: Extension of the elbow joint

Click for Answer


The muscular system major movers and shakers

Brachialis

O: The distal, anterior surface of the humerus

I: The coronoid process of the ulna

A: Flexion of the elbow

joint

Click for Answer


The muscular system major movers and shakers

Biceps

brachii

O: Long head: superior margin of the Glenoid fossa

Short head: the coracoid process of the scapula

I: The radial tuberosity of the radius

A: Flexion of the elbow joint

Click for Answer


The muscular system major movers and shakers

External

obliques

O: The last eight (8)

ribs

I: The iliac crest and

the linea alba

A: Both: flexion of the

vertebral column

Single: lateral flexion

of the vertebral column

Click for Answer


The muscular system major movers and shakers

Latissimus

dorsi

O: Spinous processes of T6 through L5, the iliac crest, the sacrum and ribs 9 through 12

I:The intertubercular groove of the humerus

A: ADduction of the

humerus

Click for Answer


The muscular system major movers and shakers

Pectoralis

major

O:The clavicle, the sternum and the costal cartilage of ribs 2 through 6

I: The greater tubercle of the humerus

A: ADduction of

the humerus

Click for Answer


The muscular system major movers and shakers

Trapezius

O: The occipital bone and the spinous processes of C7 through T12

I: The clavicle, the acromion and the spine of the scapula

A: Stabilizes the scapula

Superior fibers:

elevation of the scapula

Intermediate fibers:

retraction of the scapula

Inferior fibers:

depression of the scapula

Click for Answer


The muscular system major movers and shakers

Iliopsoas-

Iliacus

O: The iliac fossa and the sacrum

I: The lesser trochanter of the femur

A: Flexion of the hip joint

Click for Answer


The muscular system major movers and shakers

Iliopsoas-

Psoas major

O: The transverse processes and bodies of L1 through L5

I: The lesser trochanter of the femur

A: Flexion of the hip

joint

Click for Answer


The muscular system major movers and shakers

Adductor

longus

O: The pubic crest and the symphysis pubis

I: The linea aspera of the femur

A: ADduction of the hip

joint

Click for Answer


The muscular system major movers and shakers

Fibularis

(Peroneus)

longus

O: The lateral condyle of the tibia and the head and shaft of the fibula

I: The first metatarsal and the medial cuneiform

A: Plantar flexion of the

ankle joint

Click for Answer


The muscular system major movers and shakers

Soleus

O: The head of the fibula and the medial shaft of the tibia

I: The calcaneus by way of the Achilles tendon

A: Plantar flexion of the

ankle joint

Click for Answer


The muscular system major movers and shakers

Gastrocnemius

O: The medial and lateral condyles of the femur

I: The calcaneus by way of the Achilles tendon

A: Plantar flexion of the

ankle joint

Click for Answer


The muscular system major movers and shakers

Tibialis

anterior

O: The lateral condyle and the shaft of the tibia

I: The first metatarsal and the medial cuneiform

A: Dorsiflexion of the ankle

joint

Click for Answer


The muscular system major movers and shakers

Quadriceps

femoris

  • Made of four muscles:

  • Rectus femoris

  • Vastus lateralis

  • Vastus medialis

  • Vastus intermedius


The muscular system major movers and shakers

Quadriceps

femoris

Rectus Femoris

O: The anterior inferior iliac spine (AIIS)

I: The tibial tuberosity via the patellar ligament

A: Extension of the knee joint

Vastus Lateralis

O: The greater trochanter and the linea aspera of the femur

I: The tibial tuberosity via the patellar ligament

A: Extension of the knee joint

Click for Answer

Click for Answer


The muscular system major movers and shakers

Quadriceps

femoris

Vastus Medialis

O: The linea aspera of the femur

I: The tibial tuberosity via the patellar ligament

A: Extension of the knee joint

Vastus Intermedius

O: The anterior and lateral surfaces of the shaft of the femur

I: The tibial tuberosity via the patellar ligament

A: Extension of the knee joint

Click for Answer

Click for Answer


The muscular system major movers and shakers

Sartorius

O: The anterior superior iliac spine (ASIS)

I: The medial surface of the proximal shaft of the tibia

A: ABduction of the hip

joint

Click for Answer


The muscular system major movers and shakers

Gluteus

medius

O: The ilium

I: The greater trochanter of the femur

A: ABduction of the hip

joint

Click for Answer


The muscular system major movers and shakers

Biceps

femoris

O: Long head: the ischial tuberosity

Short head: the linea aspera of the femur

I: The lateral condyle of the tibia and the head of the fibula

A: Flexion of the knee joint

Click for Answer


The muscular system major movers and shakers

Gluteus

maximus

O: The iliac crest, the sacrum and the coccyx

I: The gluteal tuberosity of the femur

A: Extension of the hip joint

Click for Answer


The muscular system major movers and shakers

Anterior

deltoid

O: The clavicle, the acromion and the spine of the scapula

I: The deltoid tuberosity

A: ABduction of the shoulder

joint

Anterior head: flexion of

the shoulder joint

Lateral head: Abduction

of the shoulder joint

Posterior head: extension

of the shoulder joint

Click for Answer


The muscular system major movers and shakers

Posterior

deltoid

O: The clavicle, the acromion and the spine of the scapula

I: The deltoid tuberosity

A: ABduction of the shoulder

joint

Anterior head: flexion of the

shoulder joint

Lateral head: ABduction of

the shoulder joint

Posterior head: extension

of the shoulder joint

Click for Answer


The muscular system major movers and shakers

Rectus

abdominis

O: The pubic crest and

the symphysis pubis

I: Costal cartilage of

ribs 5, 6 and 7

A: Flexion of the

vertebral column

Click for Answer


The muscular system major movers and shakers

Sternocleidomastoid


The muscular system major movers and shakers

Sternocleidomastoid

O: The sternum and

the clavicle

I: The mastoid process

of the temporal bone

A: Both: flexion of the

cervical vertebrae

Single: rotation of the

head to the opposite side

Click for Answer


The muscular system major movers and shakers

Platysma

O: Fascia over the deltoid

and pectoralis major muscles

I: Mandible, muscles around

the angle of the mouth, and

the skin of the lower face

A: Depression of the

mandible

Click for Answer


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