sept 27-oct 4 Flashcards
rectus capitis posterior major/minor and obliquus capitis inferior/superior are the 4 What muscles
suboccipital muscles
suboccipital muscle. attaches SP of C2 to inferior nuchal line
rectus capitis posterior major
suboccipital muscle. actions: ipsilateral rotation of the head, extend the head on the neck
rectus capitis posterior major
suboccipital muscle. attaches posterior arch of C1 to inferior nuchal line
rectus capitis posterior minor
suboccipital muscle. action: extend the head on the neck
rectus capitis posterior minor
suboccipital muscle. attaches SP of C2 to TVP of C1
obliquus capitis inferior
suboccipital muscle. action: ipsilateral rotation of the head
obliquus capitis inferior
suboccipital muscle. attaches TVP of C1 to between superior and inferior nuchal line
obliquus capitis superior
suboccipital muscle. actions: lateral flexion of head/neck, extension of head on the neck
obliquus capitis superior
the most lateral 3 suboccipital muscles form what
suboccipital triangle
suboccipital muscle. forms the inferolateral border of the suboccipital triangle
obliquus capitis inferior
suboccipital muscle. forms the superolateral border of the suboccipital triangle
obliquus capitis superior
suboccipital muscle. forms the superomedial border of the suboccipital triangle
rectus capitis posterior major
floor of the suboccipital triangle
posterior atlanto-occipital membrane
roof of the suboccipital triangle
semispinalis
contents of the suboccipital triangle
vertebral artery and suboccipital nerve
pre-vertebral muscle. attaches lateral mass of C1 to occiput
rectus capitis anterior
pre-vertebral muscle. action: flexes head on the neck
rectus capitis anterior
pre-vertebral muscle. attaches TVP of C1 to occiput
rectus capitis lateralis
pre-vertebral muscle. actions: flexes head on the neck, laterally flexes head on the neck
rectus capitis lateralis
pre-vertebral muscle. attaches body of T3 to anterior tubercle of C1
longus colli/cervicis
pre-vertebral muscle. action: neck flexion
longus colli/cervicis
pre-vertebral muscle. attaches TVPs of C3-C6
longus capitis
pre-vertebral muscle. action: head/neck flexion
longus capitis
lateral neck muscle. attaches anterior tubercles of C3-6 TVPs to rib 1
anterior scalene
lateral neck muscle. actions: neck flexion, ipsilateral lateral neck flexion, elevation of rib 1 during forced inhalation, contralateral rotation of the neck (weak)
anterior scalene
lateral neck muscle. attaches posterior tubercles of C2-7 TVPs to rib 1
middle scalene
lateral neck muscle. actions: ipsilateral lateral flexion, elevates rib 2 during forced inhalation
middle scalene
lateral neck muscle. attaches posterior tubercles of C4-6 to the sternum and clavicle
posterior scalene
lateral neck muscle. actions: contralateral rotation of head/neck, neck flexion (if head/neck is neutral or flexed), head extension (if already extended), assists with inspiration
posterior scalene
structure of the body made of the mandible, scm, and midsagittal plane of the neck
anterior cervical triangle
base of the anterior cervical triangle
mandible
lateral border of the anterior cervical triangle
SCM
medial border of the anterior cervical triangle
midsagittal plane of the neck
contents of the anterior cervical triangle
muscles, arteries, veins, lymph nodes, viscera
structure of the body made of the clavicle, SCM, and trapezius
posterior cervical triangle
muscles on the floor of posterior cervical triangle
splenius capitis, levator scapula, posterior scalenes, omohyoid
contents of posterior cervical triangle
blood vessels and nerves
structure of the neck, just inferior to where the pharynx splits into the trachea and esophagus
larynx
structure of the neck. functions in voice production
larynx
structure of the neck. includes the “adam’s apple” formed by the thyroid cartilage
larynx
structure of the neck. gland anterior to the trachea, inferior to the adam’s apple
thyroid gland
structure of the neck. cartilagenous rings that protect the pharynx and larynx
trachea
structure of the neck. part of the larynx, anterior neck superior to the thyroid cartilage
hyoid bone
muscles that connect the hyoid bone to the skull
suprahyoids
general actions of the suprahyoids
elevate the hyoid bone, assist in depressing the mandible
suprahyoid muscles that attach the hyoid to the mandible
mylohyoid and geniohyoid
suprahyoid muscle. attaches styloid process of the temporal bone to the hyoid
stylohyoid
suprahyoid muscle. attaches inferior border of the mandible to the intermediate tendon to the hyoid
digastric (anterior belly)
suprahyoid muscle. attaches mastoid process (medial side) to intermediate tendon to the hyoid
digastric (posterior belly)
general action of the infrahyoids
depress the hyoid bone
infrahyoid muscle. attaches hyoid bone to manubrium
sternohyoid
infrahyoid muscle. attaches thyroid cartilage to manubrium
sternothyroid
infrahyoid muscle. attaches hyoid bone to thyroid cartilage
thyrohyoid
infrahyoid muscle. two bellies connected by an intermediate tendon
omohyoid
omohyoid belly that attaches to the hyoid bone
superior
omohyoid belly that attaches to the superior border of the scapula, near the suprascapular notch
inferior
area between the diaphragm and the pelvis
abdomen
the dividing lines of the abdomen are where
midsagittal plane and transumbilical plane (across the umbilicus)
anterior muscle of the abdomen. attaches costal cartilages of ribs 5-7 and xiphoid process to the pubic symphysis and crest
rectus abdominus
anterior muscle of the abdomen. actions: spinal flexion (trunk), stabilizing the pelvis during leg-lowering, compressing viscera
rectus abdominus
anterior muscle of the abdomen. attaches ribs 5-12 to linea alba, pubic tubercle, and anterior half of iliac crest
external oblique
anterior muscle of the abdomen. actions: contralateral rotation, ipsilateral lateral flexion, trunk flexion, stabilizing the pelvis during leg-lowering, compress and support viscera
external oblique
fibre direction of external oblique
anterior and inferomedial
anterior muscle of the abdomen. attaches the anterior half of the iliac crest to the linea alba, ribs 10-12
internal oblique
anterior muscle of the abdomen. actions: ipsilateral rotation, trunk flexion, compress and support viscera
internal oblique
fibre direction of internal oblique
anterior, superomedial
anterior muscle of the abdomen. attaches inner iliac crest, lower 6 costal cartilages, thoracolumbar fascia to linea alba
transversus abdominis
anterior muscle of the abdomen. action: compress and support viscera
transversus abdominis
fibre direction of transversus abdominis
medial
abdominal fascia. aponeurotic attachments of the external oblique, internal oblique, and tranversus abdominis form a sheath of connective tissue which encases the rectus abdominis muscle
rectus sheath
abdominal fascia. runs vertically from the xiphoid process to the pubic symphysis
linea alba
abdominal fascia. separates the 2 rectus abominis muscles
linea alba
abdominal fascia. lateral border of the rectus abdominis and its sheath
linea semilunaris
posterior muscle of the abdomen. attaches sides of T12-L5 and associated vertebral disks to lesser trochanter of the femur
psoas major
posterior muscle of the abdomen. action: works with iliacus in hip flexion, flexion of lumbar spine
psoas major
posterior muscle of the abdomen. attaches medial half of rib 12 and TVPs of lumbar vertebrae to the iliac crest and iliolumbar ligament
quadratus lumborum (QL)
posterior muscle of the abdomen. actions: lumbar spine extension, fixes rib 12 during forced expiration, lumbar spine stabilization, ipsilateral lateral flexion (hip hike)
quadratus lumborum (QL)