Types of bones

tigrebright's version from 2017-02-05 02:25

Section 1

Question Answer
long bones bones whose length is greater than their width, such as the bones of the extremities (tibia, fibula, femur, radius, ulna, humerus). They are typically very strong and are broad at the edges. They tend to have large surfaces for muscle attachment.
short bonessmall, irregularly shaped and are generally found in the ankle and wrist (carpus and tarsus).
flat bones found in the cranial vault, sternum (breastbone), shoulder blades, and ribs. They are made up of a layer of marrow (diploe) sandwiched between two layers of compact bone and they cover soft body parts.
irregular bonesa mix of irregularly shaped bones that do not fall into any of the other bone-type categories. They are found in the face, spinal column, and hips.
sesamoid bones very small, mostly rounded masses embedded in certain tendons and are usually related to the surfaces of joints. Included in this group are the patella (kneecap), metacarpophalangeal joints of the hands, and metatarsophalangeal joints of the toes.
wormian bones small bones found between suture lines of the skull where the edges of the skull bones are joined together.

Section 2

Question Answer
coronal sutureJoins the frontal bone to the two parietal bones.
ethmoid boneForms the roof of the nasal cavity.
frontal boneBone that closes the anterior part of the cranial cavity and forms the skeleton of the forehead.
lambdoid sutureJoins the two parietal bones to the occipital bone.
occipital boneBone situated at the posterior and inferior part of the cranium; articulating with the two parietal and two temporal bones.

Section 3

Question Answer
parietal bonesBones forming part of the superior and lateral surfaces of the skull, and joining each other in the midline at the sagittal suture.
sagittal sutureJoins one parietal bone to the other parietal bone.
sphenoid bonesAnterior to the temporal bones.
squamous sutureJoins the parietal bones to the temporal bones.
temporal bones Bones forming part of the lateral surfaces and the base of the skull, and containing the organs of hearing.
process a prominence or projection, as of bone
foramenan opening or hole in a bone.

Section 4

Question Answer
vertebral column, spine, consists of 26 total bones
convex rounded like the outside of a sphere
concaverounded, depressed like the hollowed inner surface of a sphere
cervical spinecontains 7 vertebrae located in the neck area. In medical reports this spine is abbreviated C1-C7. The curve is concave.
thoracic spinecontains 12 vertebrae located in the chest area, which connect to the ribs. In medical reports this spine is abbreviated T1-T12.
articulateto loosely connect or join. The 12 vertebrae of the thoracic spine articulate to the 12 ribs to form protection for the thoracic cavity.
lumbar spine contains 5 vertebrae located in the lower back. The curve is concave.
sacral spineconsists of 5 fused vertebrae. It is easily distinguishable as an upside-down triangular shape. The two lateral surfaces (sides) are smooth for articulation (loose connection) with the iliac bones of the pelvis.
coccyx (coccygeal spine)“tailbone” is a single bone formed by fusion of 4-5 vertebrae.When pressure is placed on it, it moves forward and acts like a shock absorber.
intervertebral discs composed of fibrous tissue and cartilage located between the vertebrae. Their function is to form strong joints and absorb spinal compression and shock.