Muscles

Card Set Information

Author:
MarkSilkwood
ID:
243746
Filename:
Muscles
Updated:
2013-10-29 19:12:52
Tags:
SOCM
Folders:

Description:
Muscles of the body, their origins, insertions, innervations, and functions
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user MarkSilkwood on FreezingBlue Flashcards. What would you like to do?


  1. Buccinator
    Origin: Maxillary bone and mandible

    Insertion: blends into fibers of the orbicularis oris

    innervation: facial nerve (CN VII)

    Function: Compresses cheeks
  2. Orbicularis Oris
    Origin: Maxillary bone and mandible

    Insertion: Lips

    Innervation: facial nerve (CN VII)

    Function: Compresses, purses lips
  3. Orbicularis Oculi
    Origin: Medial margin of orbit

    Insertion: Skin around eyelids

    innervation: Facial Nerve (CN VII)

    Function: Closes eyes
  4. Masseter
    Origin: Zygomatic Arch

    Insertion: Lateral surface of mandible

    Innervation: Trigeminal nerve (CN V)

    Function: Elevates mandible
  5. Temporalis
    Origin: Along Temporal lines of skull

    Insertion: Coronoid process of mandible

    Innervation: trigeminal nerve (CN V)

    Function: elevates mandible
  6. Pterygoids
    Origin: Inferior processes of sphenoid

    Insertion: medial surface of mandible

    Innervation: Trigeminal Nerve (CN V)

    Function: Elevate, protract, and/or move mandible to either side
  7. Platysma
    Origin: From cartilage of second rib to acromion of scapula

    Insertion: Mandible and skin of cheek

    Innervation: Facial Nerve (CN VII)

    Function: Tenses skin of neck, depresses mandible
  8. Sternocleidomastoid
    Origin: Superior margins of sternum and clavicle

    Insertion: Mastoid region of skull

    Innervation: Accessory nerve (CN XI) and cervical spinal nerves (C2-C3) of cervical plexus

    Function: Both sides together flex the neck; alone one side bends head toward shoulder and turns face to opposite side
  9. External intercostals
    Origin: Inferior border of each rib

    Insertion: superior border of next rib

    Innervation: Intercostal nerves

    Function: Elevates ribs
  10. Internal Intercostals
    Origin: Superior border of each rib

    Insertion: Interior border of the preceding rib

    Innervation: Intercostal nerves

    Function: Depress ribs
  11. External obliques
    Origin: lower eight ribs

    Insertion: Linea Alba and iliac Crest

    Innervation: Intercostal, iliohypogastric, and ilioinguinal nevers

    Function: Compresses abdomen, depresses ribs, flexes or laterally flexes vertebral column.
  12. Internal Oblique
    Origin: Iliac crest and adjacent connective tissues

    Insertion: Lower ribs, xiphoid of sternum, and linea alba

    Innervation Intercostal, iliohypogastric and ilioinguinal nerves

    Function: Compress abdomen, depresses ribs, flexes or laterally flexes vertebral column
  13. Transversus abdominis
    Origin: Cartilages of lower ribs, iliac crest, and adjacent connective tissues.

    Insertion: Linea alba and pubis

    Innervation: Intercostal, iliohypogastric, and ilioinguinal nerves

    Function: Compresses Abdomen
  14. Rectus Abdominus
    Origin: Superior surface of pubis around symphysis

    Insertion: inferior surface of costal cartilages (ribs 5-7) and xiphoid process

    Innervation: Intercostal nerves (T7-T12)

    Function: Depresses ribs, flexes vertebral column
  15. Linea Alba
    Origin: Inferior surfaces of costal cartilages (ribs 5-7) and xiphoid process

    Insertion: Superior surface of pubis around symphysis

    Innervation: None that are testable

    Function: Origin or insertion site of ALL of the abdominal muscles
  16. Pectoralis Minor
    Origin: Anterior surfaces of ribs 3-5

    Insertion: Coracoid process of scapula

    Innervation: Medial pectoral nerve (C8-T1)

    Function: Depresses and protracts shoulder; rotates scapula laterally (Downward); elevates ribs if scapula is stationary
  17. Rhomboideus
    Origin: Spinous process of lower cervical and upper thoracic vertebrae

    Insertion: Vertebral border of scapula

    Innervation: Dorsal scapular nerve (C5)

    Function: Adducts and rotates scapula laterally (Downward)
  18. Serratus Anterior
    Origin: Anterior and superior margins of ribs 1-9

    Insertion: Anterior surface of vertebral border of scapula

    Innervation: Long thoracic Nerve (C5-C6)

    Function: Protracts shoulder, abducts and medially rotates scapula (upward)
  19. Trapezius
    Origin: Occipital bone and spinous processes of thoracic vertebrae

    Insertion: Clavicle and scapula (Acromion and scapular spine)

    Innervation: Accessory Nerve (CN XI) and cervical spinal nerves (C3-C4)

    Function: Depends on active region and state of other muscles; may elevate, adduct, depress, or rotate scapula and/or elevate clavicle; can also extend or hyper-extend neck
  20. Coracobrachialis
    Origin: Coracoid Process

    Insertion: Medial margin of shaft of humerus

    Innervation: Musculocutaneous Nerve (C5-C7)

    Function: Adduction and flexion at shoulder
  21. Deltoid
    Origin: Clavicle and scapula (Acromion and adjacent scapular spine)

    Insertion: deltoid tuberosity of humerus

    Innervation: Axillary nerve (C5-C6)

    Function: Abduction at shoulder
  22. Latissimus dorsi
    Origin: Spinous processes of lower thoracic vertebrae, ribs, and lumbar vertebrae

    Insertion: Intertubercular groove of humerus

    Innervation: Thoracodorsal nerve (C6-C8)

    Function: Extension, adduction, and medial rotation at shoulder
  23. Pectoralis Major
    Origin: cartilages of ribs 2-6, body of sternum, and clavicle

    Insertion: Greater tubercle of humerus

    Innervation: Pectoral Nerves (C5-T1)

    Function: Flexion, adduction , and medial rotation at shoulder
  24. Supraspinatus
    Origin: Supraspinous fossa of scapula

    Insertion: Greater tubercle of humerus

    Innervation: Suprascapular nerve (C5)

    Function: Abduction at shoulder
  25. Infraspinatus
    Origin: Infraspinous fossa of scapula

    Insertion: Greater tubercle of humerus

    Innervation: Suprascapular nerve (C5-C6)

    Function: Lateral rotation at shoulder
  26. Subscapularis
    Origin: Subscapular Fossa of scapula

    Insertion: Lesser tubercle of humerus

    Innervation: Subscapular nerves (C5-C6)

    Function: Medial rotation at shoulder

What would you like to do?

Home > Flashcards > Print Preview