A&P Ch. 3 - Muscle Identification & OIA

What muscle is labeled at #1?

Orbicularis Oculi

What muscle is labeled at #2?

Orbicularis Oris

What muscle is labeled at #3?

Buccinator

What muscle is labeled at #4?

Platysma

What muscle is labeled #5?

Masseter

• origin= zygomatic bone

• insertion= mandible

• action: elevates mandible

What muscle is labeled at #6?

Temporalis

What muscle is labeled #7?

Sternocleidomastoid

• origin= sternum + clavicle

• insertion= mastoid process

• action= flexes neck + rotates head

What muscle is labeled #8?

External Intercostals

What muscle is labeled #9?

Internal Intercostals

What muscle is labeled #11?

Rectus Abdominis

What muscle is labeled #12?

External Oblique

What muscle is labeled #13?

Internal Oblique

What muscle is labeled #15?

Pectoralis Major

• origin= clavicle + sternum

• insertion= humerus

• action= flexes, adducts, medially rotates arm

What muscle is labeled at #16?

Pectoralis Minor

What muscle is labeled at #17?

Serratus Anterior

What muscle is labeled at #18?

Trapezius

What muscle is labeled #19?

Latissimus Dorsi

What muscle is labeled #20?

Levator Scapulae

What muscle is labeled #21?

Rhomboid Major

• origin= vertebrae

• insertion= scapula

• action= retracts scapula

What muscle is labeled #22?

Rhomboid Minor

What muscle is labeled #23?

Deltoid

• origin= clavicle + scapula

• insertion= humerus

• action= abducts arms

What muscle is labeled #24?

Teres Major

What muscle of the rotator cuff is labeled #26?

Supraspinatus

What muscle of the rotator cuff is labeled #27?

Infraspinatus

What muscle of the rotator cuff is labeled #28?

Teres Minor

What muscle is labeled #29?

Biceps Brachii

• origin= scapula

• insertion= radius

• action= flexes elbow + supinates forearm

What head of the Bicep Brachi is labeled #30?

Long head

What head of the Bicep Brachi is labeled #31?

Short head

What muscle is labeled #32?

Brachialis

What muscle is labeled #33?

Brachioradialis

What muscle is labeled #34?

Pronator Teres

What muscle is labeled #35?

Flexor Carpi Ulnaris

What muscle is labeled at #36?

Extensor Digitorum

What muscle is labeled at #37?

Extensor Carpi Ulnaris

What muscle is labeled #38

Triceps Brachii

• origin= scapula + humerus

• insertion= ulna

• action= extends elbow

What part of Triceps Brachii is labeled #39?

Lateral head

What part of Triceps Brachii is labeled #40?

Medial head

What part of Triceps Brachii is labeled #41?

Long head

What muscle is labeled #42?

Iliopsoas

• origin= ilium + lumbar vertebrae

• insertion= femur

• action= flexes thigh

What muscle is labeled #43?

Sartorius

• origin= ilium

• insertion= tibia

• action= flexes thigh + leg

What muscle is labeled #44?

Adductor Magnus

What muscle is labeled #45?

Adductor Longus

What muscle is labeled #46?

Pectineus

What muscle is labeled #47?

Gracilis

• origin= pubis

• insertion= tibia

• action= adducts thigh

What muscle is labeled #48?

Rectus Femoris

• origin= ilium

• insertion= tibia

• action= extends leg

Which muscle is labeled #49?

Vastus Lateralis

Which muscle is labeled #50?

Vastus Medialis

Which muscle is labeled #51?

Vastus Intermedius

Which muscle is labeled #52?

Tensor Fasciae Latae

Which muscle is labeled #53?

Gluteus Maximus

• origin= ilium

• insertion= femur

• action= extends thigh

What muscle is labeled #54?

Gluteus Medius

What muscle is labeled #55?

Biceps Femoris

• origin= ischium

• insertion= fibula

• action= flexes leg

What muscle is labeled at #56?

Semitendinosus

What muscle is labeled at #57?

Semimembranosus

What muscle is located at #58?

Tibialis Anterior

• origin= tibia

• insertion= foot

• action= dorsiflexes foot

What muscle is located at #59?

Extensor Digitorum Longus

What muscle is located at #60?

Gastrocnemius

• origin= femur

• insertion= calcaneus

• action= plantar flexes foot

What muscle is located at #61?

Soleus

What muscle is located at #62?

Iliacus

What muscle is located at #63?

Psoas Major