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32 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Splenius capitus
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POINTS OF ATTACHMENT:
ligamentum nuchae; mastoid process |
extends head;
laterally rotates head |
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semispinalis capitus
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POINTS OF ATTACHMENT:
transverse process of cervical vertebrae; occipital bone |
extends head;
laterally rotates head synergistically with sternocleidomastoid |
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iliocostalis
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REGIONS:
lumbar; thoracis; cervicis |
extend back/spine;
maintain erect posture |
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longissimus
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REGIONS:
thoracis; cervicis; capitis |
extend back/spine;
maintain erect posture |
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spinalis
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REGIONS:
thoracis; cervicis |
extend back/spine;
maintain erect posture |
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sternocleidomastoid
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POINTS OF ATTACHMENT:
manubrium of sternum, medial clavicle; mastoid process and occipital bone |
prime movers of head flexion; lateral flexion and head rotation when acting alone
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digastric (anterior and posterior bellies)
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all originate at points on the skull or mandible and insert on the hyoid
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elevates hyoid
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stylohoid
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all originate at points on the skull or mandible and insert on the hyoid
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elevates hyoid
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Platysma
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don't have to know points of attachments
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functions: draws lower lip inferiorly and posteriorly; depresses mandible
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Scalenes
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don't have to know points of attachments
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elevate first two ribs in inspiration; flex and rotate neck
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mylohyoid
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all originate at points on the skull or mandible and insert on hyoid
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elevates hyoid and tongue
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geniohyoid
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all originate at points on the skull or mandible and insert on hyoid
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elevates hyoid
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sternohyoid
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sternum and hyoid
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depresses hyoid and larynx
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sternothyroid
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sternum and thyroid
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pulls thyroid cartilage inferiorly
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omohyoid
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shoulders and hyoid
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depresses hyoid
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thryohyoid
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thyroid and hyoid
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depresses hyoid
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external intercostals
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inferior border of rib; superior border of rib below it
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elevate rib cage during inspiration
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internal intercostals
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inferior border of rib; superior border of rib above it
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depress rib cage during expiration
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transversus thoracis
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inner surface of lower third of sternum; inner surface of costal cartilages
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depresses upper ribs
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diaphragm
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inferior rib cage and lumbar vertebrae; central tendon
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prime mover of inspiration; flattens on contraction
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rectus abdominis
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pubic crest and pubic symphysis; xiphoid process and coastal cartilages
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flex and rotate lumbar region of vertebral column
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external oblique
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lower 8 ribs; aponeurosis inserts on linea alba
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flex vertebral column; trunk rotation; and lateral flexion
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internal oblique
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iliac crest, inguinal ligament, fascia; linea alba, lower ribs
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flex vertebral column, trunk rotation; and lateral flexion
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transverse abdominis
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inguinal ligament, iliac crest, inferior costal cartilages;
linea alba |
compress abdominal contents
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quadratus lumborum
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iliac crest; lumbar vertebrae and 12th rib
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flex vertebral column laterally, assists in lower back extension
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iliacus
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iliac fossa/crest;
less trochanter of femur |
prime mover in thigh flexion and trunk flexion
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psoas major
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T12-L5 vertebrae;
lesser trochanter of femur |
prime mover in thigh flexion and trunk flexion; lateral flexion of spine
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Orbicularis oris
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(don't have to know attachment points)
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closes and protrudes lips
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orbicularis oculi
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(don't have to know attachment points)
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closes eye; draws eyebrows inferiorly
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buccinator
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(don't have to know attachment points)
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draws corner of mouth laterally; compresses cheek
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masseter
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(don't have to know attachment points)
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elevates mandible (prime mover of jaw closure)
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temporalis
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(don't have to know attachment points)
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elevates and retracts mandible; maintains position of mandible at rest (prime mover of jaw closure)
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