BIO Lab Final

Sternocleidomastoid

Flexes head and neck

Splenius Capitis

Extends head and neck

Trapezius

Shrugs shoulders, scapular elevation & depression

Diaphragm

Descends for inspiration, ascends for expiration

External Intercostals

Elevates and spreads ribs, primary muscle of inspiration

Internal Intercostals

Depresses ribs

External Oblique

Compresses abdomen, rotates trunk laterally

Internal Oblique

Pulls pelvis upward, flattens lumbar spinal curve

Transverse Abdominis

Compresses abdomen, rotates trunk laterally

Rectus Abdominis

Compresses abdomen, rotates trunk, flexes trunk

Quadratus Lumborum

Lateral flexion of vertebral column

Erector Spinae Group

Extends vertebral column

Serratus Anterior

Pulls shoulders down and forward, abducts & rotates upward

Levator Scapulae

Elevates scapula

Pectoralis Major

Flexes arm, adducts arm anteriorly

Latissimus Dorsi

Extends arm, adducts arm posteriorly

Deltoid

Abducts shoulder, assists in shoulder flexion and extension

Biceps Brachii

Flexes supinated forearm, supinates forearm and hand

Triceps Brachii

Extends lower arm

Flexor Carpi Radialis

Flexes hand and forearm at the wrist

Palmaris Longus

Flexes hand

Flexor Carpi Ulnaris

Flexes hand, adducts hand

Extensor Carpi Ulnaris

Extends hand

Rectus Femoris

Flexes thigh, extends leg at the knee

Adductor Group

Adducts thigh

Gluteus Maximus

Extends thigh, rotates outward

Hamstring Group

Extends thigh, flexes leg at the knee

Tibialis Anterior

Dorsiflexes foot, inverts foot

Gastrocnemius

Plantar flexion, flexes leg

Soleus

Plantar flexion