axial skeleton Flashcards
skull bones
frontal, parietal, temporal, sphenoid, occipital, ethmoid, nasal, zygomatic, mandible, vomer, lacrimal
sutures
sagittal, coronal(frontal), squamosal, lamboidal
C1(atlas)
ring-shaped bone that begins at the base of your skull
control your forward, backward and side head and neck movements
C2(axis)
allows the atlas to pivot against it for the side-to-side “no” rotation of your head.provides sensation to the upper area of your head
control your forward, backward and side head and neck movements
C3
gives sensation to the side of your face and back of your head
control your forward, backward and side head and neck movements
C4
controls your upward shoulder motion and is one of the nerves that control your diaphragm (muscle at the bottom of your rib cage that helps you breathe). provides sensation for parts of your neck, shoulders, and upper arms.
C5
controls the deltoid muscles of your shoulders and your biceps, provides sensation to the upper part of your upper arm down to your elbow
C6
Controls the extensor muscles of your wrist and is involved in the control of your biceps, provides sensation to the thumb side of your forearm and hand
C7
controls your triceps and wrist extensor muscles, and provides sensation to the back of your arm into your middle finger
S1(sacrum)
nerves affect the hips and groin.
S2
S2 nerves affect the back of the thighs.
S3
nerves affect the medial buttock area.
S4& S5
nerves affect the perineal area. The perineum is between the legs. It is the diamond-shaped area containing the anus, and in females, the vagina.
Coccyx
provides slight support for the pelvic organs but actually is a bone of little use.
L1
provides sensation to your groin and genital area and helps move your hip muscles.