1. 11-4 cont

2. Axial Muscles
Position ____________________and _______________________ _______________________________
Move rib cage
Assist with movements for _________________________________
60% of skeletal muscles in the body

3. Appendicular Muscles
__________________________________ or move components of appendicular skeleton
40%

4. 11-5
Axial muscles

5. Muscles of Head and Neck
Muscles that move face, _________________________, and _______________________
Responsible for verbal and nonverbal communication
________________________________

6. Muscles of Facial Expression
Originate on surface of _______________________
When they contract, the skin moves
Largest group is associated w/ the _______________________
Orbicularis oris- constricts opening of the mouth
Buccinator- cooperates w/ masticatory muscles by moving food back across teeth; suction for suckling
Epicranium (___________________________) contains temporoparietalis and occipitofrontalis muscle

7. Extrinsic Eye Muscles
6 muscles known as extraocular (oculomotor) muscles
Originate on surface of orbit
Control position of each eye
_______________________________________-look down
Medial rectus- look medially
_____________________________________-look up
Lateral rectus- look laterally
________________________________-eye rolls; look up and laterally
Superior oblique- eye rolls; look down and laterally

8. Muscles of Mastication
Move mandible at temporomandibular joint
____________________________- strongest jaw muscle; elevates mandible and closes the jaw
_________________________- elevates mandible
___________________________- elevate, depress, or protract mandible or slide it from side to side (lateral excursion)

9. Muscles of Tongue
________________________________ - elevates tongue, depresses soft palate
Styloglossus- retracts tongue; elevates side
______________________________- depresses and protracts tongue
Hyoglossus- depresses and retracts tongue

10. Muscles of Pharynx Initiate ______________________ process
Pharyngeal __________________________
Superior, middle, and inferior- constrict pharynx to propel bolus into esophagus
Laryngeal elevator- elevate _________________________
Palatal muscles
Levator veli palatine and tensor veli palatini- elevates soft palate

11. Anterior Muscles of the Neck
5 muscles that control position of ______________________
2 muscles that depress the ______________________________ and tense the floor of the mouth
3 muscles that provide a stable foundation for muscles of tongue and _________________________________

12. Anterior Muscles of the Neck cont.
_________________________- depresses mandible or elevates larynx
Geniohyoid- depresses mandible or elevates larynx; pulls hyoid bone anteriorly
__________________________________- elevates floor of mouth and hyoid bone or depresses mandible
Ommohyoid, sternohyoid, sternothyroid- depresses hyoid bone and larynx
___________________________________- elevates larynx
Thyrohyoid- elevates thyroid, depresses hyoid bone
Sternocleidomastoid- (2) flex the neck (1) side bends head toward shoulder and turns face to opposite side

13. Muscles of Vertebral Column
Erector spinae muscles (spinal ____________________________)- superficial and deep layers
When contracting together, ______________________ vertebral column
One side contract-________________________________________
Superficial
Spinalis group
Longissimus group
Iliocostalis group

14. Muscles of Vertebral Column cont.
Deep layer- _______________________________ and stabilize the vertebrae; slight extension or rotation
Semispinalis group
Multifidus muscle
Interspinales
Intertransversarii
rotatores

15. Muscles of Vertebral Column cont.
Spinal flexors
___________________
Longus capitis & longus colli rotate or flex neck
___________________________________
Quadratus lumborum- flex vertebral column and depress the ribs

16. Oblique and Rectus Muscles
Forms muscular walls of thoracic and abdominopelvic cavities b/t 1st thoracic vertebra and ______________________
Neck also has some
______________________________- compress underlying structures or rotate the vertebral column
_________________________- flexors of vertebral column

17. Oblique Muscles _______________________________ muscles-neck
Elevate 1st 2 ribs; assist in flexion of neck
Intercostal muscles- ______________________
b/t ribs
Aid in respiratory movement
___________________________ muscles- thorax

18. Oblique Muscles Abdominopelvic
External and internal ___________________________- compresses abdomen, depresses ribs, flex or bend spine
Transversus abdominis- compresses abdomen
Rectus abdominus (_______________) - depresses rubs, flexes vertebral column, compresses abdomen
Separated into segments by tendinous inscriptions

19. Diaphragm Refers to any muscular sheet that forms a wall
Diaphragmatic muscle- separates _____________________________ and thoracic cavities

20. Muscles of Pelvic Floor
b/t sacrum and __________________________________
Support organs of pelvic cavity
Flex _______________________ and coccyx
Control movement of materials through ______________________ and anus

21. Muscles of Pelvic Floor
Anterior muscles- _________________________________ triangle
Posterior- _________________________ triangle
Superficial muscles- external genitalia
Cover deeper muscles that strengthen pelvic floor and encircle the urethra
Makeup the urogenital diaphragm- b/t pubic bones
Pelvic __________________________________- foundation of anal triangle