IUPUI Biol N261 Lab 2 Exam

Trapezius

Extends and abducts head, and adducts scapula, fixes scapula

Deltoid

Abducts arm; flexes, extends, medially and laterally rotates arm

Pectoralis major

Flexes, adducts, and medially rotates arm

Pectoralis minor

Depress glenoid cavity, raises ribs 3-5

Latissimus dorsi

Extends, adducts, and medially rotates arm; draws shoulder inferiorly

Supraspinatus

Abducts arm, helps stabilizes shoulder joint

Infraspinatus

Laterally rotates arm, stabilizes shoulder joint

Subscapularis

Medially rotates arm, stabilizes shoulder joint

Teres minor

Laterally rotates and adducts arm, stabilizes shoulder joint

Biceps brachii

Flexes arm, flexes forearm, supinates hand

Triceps brachii

Extends and adducts arm, extends forearm

Coracobrachialis

Flexes and adducts arm

Brachioradialis

Flexes forearm

Supinator

Supinates hand

Pronator teres

Pronates hand, flexes forearm

Palmaris longus

Flexes hand

Flexor carpi radialis

Flexes and abducts hand

Flexor carpi ulnaris

Flexes and adducts hand

Flexor digitorum superficialis

Flexes proximal and middle phalanges, flexes hand

Flexor pollicis longus

Flexes thumb

Extensor carpi radialis longus

Extends and abducts hand

Extensor carpi radialis brevis

Extends and abducts hand

Extensor carpi ulnaris

Extends and adducts hand

Extensor digitorum

Extends phalanges, extends hand

Abductor pollicis longus

Abducts thumb

Extensor pollicis longus and brevis

Extends thumb

Teres major

Extends, adducts, and medially rotates arm

The 4 rotator cuff muscles

-Supraspinatus

-Infraspinatus

-Sunscapularis

-Teres minor

Iliopsoas

(Iliacus and psoas major)

Flexes thigh and lumbar vertebrae

The 5 muscles of medial compartment of thigh

-Adductor magnus

-Pectineus

-Adductor brevis

-Adductor longus

-Gracilis

The 5 muscles of anterior compartment of thigh

-Sartorius

-Vastus Intermedius (deep)

-Rectus femoris

-Vastus lateralis

-Vastus medialis

The 4 quadriceps femoris muscles

-Vastus Intermedius (deep)

-Rectus femoris

-Vastus lateralis

-Vastus medialis

Sartorius

Flexes and laterally rotates thigh, flexes leg

Gracilis

Adducts thigh, flexes leg

Pectineus

Adducts and flexes thigh

Adductor brevis

Adducts, flexes, and laterally rotates thigh

Adductor longus

Adducts, flexes, and laterally rotates thigh

Adductor magnus

Adducts, flexes, extends, and laterally rotates thigh

Rectus femoris

Flexes thigh, extends leg

Vastus lateralis

Extends leg

Vastus intermedius

Extends leg. Deep to rectus femoris

Vastus medialis

Extends leg

Tensor fasciae latae

Flexes, abducts, and medially rotates thigh

Gluteus maximus

Extends and laterally rotates thigh, braces knee

Gluteus medius

Abducts and medially rotates thigh

Gluteus minimus

Abducts and medially rotates thigh. Deep to gluteus medius

The 3 hamstring muscles

-Biceps femoris (long and short head)

-Semitendinosus

-Semimembranosus

Biceps femoris

Extends thigh, flexes leg

Semitendinosus

Extends thigh, flexes leg

Semimembranosus

Extends thigh, flexes leg

Gastrocnemius

Flexes leg, plantar flexes foot

Soleus

Plantar flexes foot

Plantaris

Flexes leg, plantar flexes foot

Tibialis posterior

Plantar flexes and inverts foot

Flexor digitorum longus

Flexes toes, plantar flexes and inverts foot

Flexor hallucis longus

Flexes hallux, inverts foot

Tibialis anterior

Dorsiflexes and inverts foot

Extensor digitorum longus

Extends toes, dorsiflexes foot

Extensor hallucis longus

Extends hallux, dorsiflexes foot

Fibularis longus

Plantar flexes and everts foot

Levator scapulae

Elevates scapula, abducts and rotates neck

Scalenes (anterior, middle, and posterior)

Flexes and rotates neck, elevates rib 1 and 2

Sternocleidomastoid

Rotates and flexes head

Sternohyoid

Depresses hyoid

Sternothyroid

Depresses thyroid cartilage

Omohyoid (superior and inferior belly)

Depresses hyoid

Platysma

Depresses lower lip, opens jaw

Digastric (anterior and posterior belly)

Elevates, protracts, retracts hyoid; opens mandible

Frontalis

Raises eyebrows, draws scalp anteriorly

Occipitalis

Draws scalp posteriorly

Temporalis

Closes mandible

Masseter

Closes mandible

Orbicularis oculi

Closes eyelid

Orbicularis oris

Closes lips

Mentalis

Protrudes lower lip

Risorius

Abducts corner of mouth (draws edge of mouth lateral)

Buccinator

Compresses cheek

Zygomaticus major

Elevates corners of mouth (in smiling and laughing)

External abdominal oblique

Compresses abdominal wall, laterally rotates trunk

Internal abdominal oblique

Compresses abdominal wall, laterally rotates trunk

Transversus abdominis

Compresses abdominal wall, laterally rotates trunk

Rectus abdominis

Flexes vertebral column, compresses abdominal wall

The 4 ab muscles

-External abdominal oblique

-Internal abdominal oblique

-Transversus abdominis

-Rectus abdominis

Serratus anterior

Abducts scapula, rotates scapula to elevate shoulder

External intercostals

Elevates ribs (increases volume in thorax)

Internal intercostals

Depresses ribs (decreases volume in thorax)

The erector spinae (I love spagetti) muscles

-Iliocostalis

-Longissimus

-Spinalis

Iliocostalis

Extends and rotates vertebral column and head

Longissimus

Extends and rotates vertebral column and head

Spinalis

Extends and rotates vertebral column and head

Rhomboideus major

Adducts scapula (draws scapulae together)

Rhomboideus minor

Adducts scapula (draws scapulae together)

Splenius

Extends and rotates head

Rectus sheath

Encloses the abdominal muscles

Linea alba

Verically divides the right and left side of rectus abdominis

Tendinous intersections

Small connective tissue bands which run horizontally across rectus abdominis

The 5 hip lateral rotator muscles

-Piriformis

-Gemellus superior

-Orbturator internus

-Gemellus inferior

-Quadratus femoris

Brachialis

Flexes forearms

Flexor digitorum profundus

Flexes phalanges, flexes hand

Galea aponeurotica

Tendinous sheet on superior aspect of scull