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Functions of muscles
movement of body parts and organ contents
maintain posture and prevent movement
communication-speech, expression and writing
control of openings and passageways
larger blood vessels and nerves, stretch receptors
surrounds bundle of cells called a fasicle
indirect muscle attachments
epimysium continues as tendon or aponeurosis (broad sheet) that merges into periosteum as perforating fibers
extrinsic tongue muscles
connect to the tongue behind hyoid, styloid process, palate and inside of chin
Biting and Chewing (mastication)
Temporalis and Masseter elevate the mandible
Medial and Lateral Pterygoids help elevate, but produce lateral swinging of jaw
4 pairs of sheetlike muscles of abdomen
erector spinae group
responsible for back pain?
3 columns muscle from sacrum to ribs
extends vertebral column
most common type of hernia (rare in women)
viscera enter inguinal canal or even the scrotum
Adductors of the Hip Joint
Pectineus, Adductor brevis and Adductor longus adduct femur
Muscles acting on knee
4 headed muscle attaches to tibial tuberosity (next slide)
quadriceps femoris tendon attaches to patella
posterior (flexor) compartment of the thigh
contains hamstring muscles:
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