A&P Lab AOI Qiuiz #1 (Head, Neck, Chest, Shoulder, Abdomen, and Back)

Frontalis

Head Muscle : A= Raises Eyebrows, O= Galea aponeurotica, I= Eyebrows

Occipitalis

Head Muscle : A= Draws scalp backward, O= Occipital bone and mastoid, I= Galea aponeurotic

Orbicularis occulli

Muscle Head : A= Closes eyelids (blinks & squints), O= Medial orbit of eye, I= Eyelid

Zygomaticus

Head Muscle : A= Smiling, O= Zygomatic bone, I= Corner of mouth

Masseter

Head Muscle : A= Elevates mandible, O= Zygomatic arch, I= Mandible

Temporalis

Head Muscle : A= Elevates mandible, O= Superior and inferior temporal lines, I= Coronoid process of mandible

Buccinator

Head Muscle : A= Depresses cheek (sucking), O= Alveoli of mandible and maxilla, I= Orbicular ores

Sternocleidomastoid

Neck Muscles : A= Flexes head downward, O= Manubrium and clavicle, I= Mastoid

Sternohyoid

Neck Muscles : A= Depresses hyoid, O= Manubrium and clavicle, I= Hyoid

Sternothyroid

Neck Muscle : A= Draws larynx downward, O= Manubrium, I= Thyroid cartilage

Omohyoid

Neck Muscle : A: Draws hyoid downward, O= Superior border of scapula, I= Hyoid

Digastric

Neck Muscle : A= Elevates hyoid, O= Mastoid and mandible, I= Hyoid

Mylohyoid

Neck Muscle : A= Raises hyoid, O= Mandible, I= Hyoid

Pectoralis major

Chest Muscle : A= Flexes, adducts, and rotates humerus, O= Sternum, I= Intertubercular groove of humerus

Pectoralis minor

Chest Muscle : A= Depress and abduct scapula, O= 3-5 ribs, I= Coracoid of scapula

Deltoid

Chest Muscle : A= Abducts arm, O= Clavicle, acromion and spine of scapula, I= Deltoid tuberosities

Serratus anterior

Chest Muscle : A= Abducts scapula, O= Ribs 1-8 or 9, I= Vertebral border of scapula

External intercostals

Chest Muscle : A= Elevates ribs, inspiration, O= Superior rib, I= Inferior Rib

Internal intercostals

Chest Muscle : A= Compress ribs, force expiration, O= Inferior rib, I= Superior rib

External oblique

Abdominal Muscle : A= Flex trunk, increase abdominal pressure, O= Lower 8 ribs, I= Linea alba

Internal oblique

Abdominal Muscle : A= Flex trunk, increase abdominal pressure, O= Iliac crest, thoracolumbar fascia, I= Linea alba

Rectus abdominus

Abdominal Muscle : A= Flex trunk, increases abdominal pressure, O= Pubic bone, I= Xiphoid, costal cartilage of ribs 5-7

Transverse abdominis

Abdominal Muscle : A= Flex trunk, increase abdominal pressure, O= Iliac crest, thoracolumbar fascia, I= Linea alba, pubis

Trapezius

Shoulder/Back Muscle : A= Adducts and elevates scapula, extends head, O= Occipital bone; ligamentum nuchae & C7-T12, I= Clavicle, acromion & spine of scapula

Infraspinatus

Shoulder/Back Muscle : A= Rotates humerus laterally, O= Infraspinous fossa, I= Greater tubercle of humerus

Supraspinatus

Shoulder/Back Muscle : A= Abducts humerus, O= Supraspinous fossa, I= Greater tubercle of humerus

Subscapularis

Shoulder/Back Muscle : A= Rotates humerus medially, O= Subscapular fossa, I= Lesser tubercle

Levator scapulae

Shoulder/Back Muscle : A= Elevates scapula, O= C1-C4, I= Vertebral border of scapula

Erector spinae

Shoulder/Back Muscle: A= Extends vertebral column, O= Sacrum, iliac crest, T11 and T12, I= Ribs and transverse process of thoracic vertebra

Latissimus dorsi

Shoulder/Back Muscle : A= Adducts arm, depress scapula, O= Crest, last 4 rib pairs, I= Intertubercular groove of humerus