UTA A&P I Lab Practical 2

HEAD/NECK

Orbicularis Oris

-Origin: fibers surrounding opening of mouth

-Insertion: skin at corner of the mouth

-Action: closes lips

OIA

Orbicularis Oculi

-Origin: medial wall of orbit

-Insertion: circular path around orbit

-Action: closes eyes

OIA

Mentalis

-Action: pouting

A

Platysma

-Action: pouting

A

Temporalis

-Origin: temporal bone

-Insertion: coronoid process

-Action: elevates mandible

OIA

Masseter

-Origin: maxilla

-Insertion: angle of mandible

-Action: closing mouth

OIA

Trapezius

-Origin: spines of C7-T12

-Insertion: clavicle

-Action: stabilize scapula

OIA

Mylohyoid

Action: elevates hyoid bone

A

Omohyoid

Action: depresses hyoid bone

A

Sternohyoid

Action: depresses hyoid bone

A

Sternocleidomastoid

-Origin: sternums manubrium

-Insertion: mastoid process of temporal bone

-Action: elevates sternum during forced inhalation

OIA

Digastrics

Action: elevates hyoid bones

A

Sternothyroid

Action: depresses thyroid cartilage of larynx

A

THORAX:

Deltoid

-Origin: acromial extremity of clavicle

-Insertion: devoid of tuberosity of humerus.

-Action: laterally rotates arm

OIA

Pectoralis minor

Action: rotates scapula downward

A

Pectoralis Major

-Origin: clavicle

-Insertion: deltoid tuberosity of humerus.

-Action: medially rotates arm

OIA

Transverse abdominis

Action: compresses abdomen

A

Internal oblique

Action: rotate vertebral column

A

External Oblique

-Origin: ribs 4-12

-Insertion: iliac crest

-Action: rotate vertebral column

OIA

Rectus Abdominis

-Origin: pubic crest

-Insertion: xiphoid process

-Action: compresses abdomen to aid in urination/defecation

OIA

Rhomboid minor

stabilizes scapula

A

Rhomboid major

stabilizes scapula

A

Teres major

-Origin: inferior angle of scapula

-Insertion: extends arm at shoulder joint

OIA

Latissimus dorsi

-Origin: lumbar vertebrae

-Insertion: intertubercular sulcus of humerus

-Action: elevates torso

OIA

Levator scapulae

elevates scapula and rotates downward

A

Supraspinatus

assists deltoid muscle in adbucting arm

A

Infraspinatus

laterally rotates and adducts arm

A

ARM:

Lateral Head of Biceps Brachii

-Origin: posterior surface of humerus

-Insertion: olecranon of ulna

-Action: extends forearm at elbow joint

OIA

Long Head of Biceps Brachii

-Origin: infraglenoid tubercle of scapula

-Insertion: olecranon of ulna

-Action: extends forearm at elbow joint

OIA

Medial Head of Biceps Brachii

-Origin: posterior surface of humerus

-Insertion: olecranon of ulna

-Action: extends forearm at elbow joint

OIA. Smallest of Medial head of Biceps Brachii

Biceps brachii

-Origin: supraglenoid tubercle of scapula

-Insertion: radial tuberosity

-Action: flexes forearm at elbow joint

OIA

Brachialis

-Origin: anterior surface of humerus

-Insertion: coronoid process of ulna

-Action: flexes forearm at elbow joint

OIA

Brachioradialis

-Origin: distal end of humerus

-Insertion: styloid process of radius

-Action: flexes forearm at elbow joint

OIA

Pronator teres

-Origin: medial epicondyle of humerus

-Insertion: midlateral surface of radius

-Action: weakly flexes forearm at elbow joint

OIA

Flexor carpi radialis

-Origin: medial epicondyle of humerus

-Insertion: metacarpals 2 and 3

-Action: flexes hand

OIA

Palmaris longus

-Origin: medial epicondyle of humerus

-Insertion: flexor retinaculum

-Action: weakly flexes hand

OIA

Flexor carpi ulnaris

-Origin: medial epicondyle of humerus

-Insertion: base of metacarpal 5

-Action: weakly flexes hand

OIA

Flexor digitorum profundus

-Origin: anterior surface of ulna

-Insertion: base of phalanx of each finger

-Action: flexes phalanges

OIA

Extensor carpi ulnaris

-Origin: lateral epicondyle of humerus

-Insertion: metacarpal 5

-Action: extends hand at wrist

OIA

Extensor carpi radialis longus

-Origin: lateral ridge of humerus

-Insertion: metacarpal 2

-Action: extends hand at wrist joint

OIA

Extensor carpi radialis brevis

-Origin: lateral epicondyle of humerus

-Insertion: metacarpal 3

-Action: extends hand at wrist joint

OIA

Extensor digitorum

-Origin: lateral epicondyle of humerus

-Insertion: distal and middle phalanges of each finger

-Action: extends fingers

OIA

LEG:

Sartorius

Origin: superior iliac spine

Insertion: medial surface of femur body

Action: weakly flexes knee joint

OIA

Quadriceps femoris:

4 heads

Rectus femoris

Origin: anterior iliac spine

Insertion: patella

Action: extends leg at knee joint

OIA

Vastus lateralis

Origin: linea aspera of femur

Insertion: patella

Action: extend leg at knee joint

OIA

Vastus intermedius

Origin: lateral femur body

Insertion: patella

Action: extends leg at knee joint

OIA

Vastus medialis

Origin: linea aspera of femur

Insertion: patella

Action: extends leg at knee joint

OIA

Gracilis

Origin: pubis body

Insertion: medial surface of tibia body

Action: flexes leg at knee joint

OIA

Gluteus maximus

-Origin: sacrum

-Insertion: no I'm not learning this one its bullshit. iliotibial tract

-Action: extends thigh at hip joint

OIA

Hamstrings:

Semimembranosus

-Origin: ischial tuberosity

-Insertion: medial condyle of tibia

-Action: flexes leg at knee joint

OIA

Semitendinosus

-Origin: ischial tuberosity

-Insertion: shaft of tibia

-Action: flexes leg at knee joint

OIA

Biceps femoris

-Origin: linea aspera of femur

-Insertion: fibula head

-Action: flexes leg at knee joint

OIA

Gastrocnemius

-Origin: capsule of knee

-Insertion: calcaneus

-Action: flexes leg at knee joint

OIA

Fibularis longus

-Origin: body of fibula

-Insertion: metatarsal 1

-Action: plantar flexes foot

OIA

Extensor digitorum longus

-Origin: anterior surface of fibula

-Insertion: middle/distal phalanges of toes 2-5

-Action: dorsiflexes foot at ankle joint

OIA

Tibialis anterior

-Origin: body of tibia

-Insertion: metatarsals 1

-Action: dorsiflexes foot at ankle joint

OIA

Fibularis brevis

-Origin: distal half of body of fibula

-Insertion: base of metatarsal 1

-Action: plantar flexes foot at ankle joint

OIA

BRAIN:

Frontal Lobe

Parietal Lobe

Occipital Lobe

Temporal Lobe

Longitudinal Fissure

Central Sulcus

Cerebellum

Olfactory bulb and tract

Optic Nerve and tract

Midbrain

Pons

Medulla Oblongata

Mammillary body

Corpus Callosum

Lateral Ventricle

Fornix

Parieto-occipital sulcus

Pons:

Thalamus

Mammilary body

Fourth Ventricle

Medulla Oblongata:

Arbor Vitae

EYE:

Sclera

Cornea

Retina

Iris

Pupil

Lens

Choroid

Optic Disk

Optic Nerve

Aqueous and Vitreous humor

External eye muscles

Lacrimal gland