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Skeletal system 1
lab week 1
33
Anatomy
Undergraduate 2
01/26/2010

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Term
Median Plane
Definition
A vertical plane passing through the mid-line of the body that divides the body into equal left and right halves.
Term
Sagittal plane
Definition
Any plane parallel to the median plane. A midsagittal plane is the same thing as the median plane.
Term
Frontal (coronal) Plane
Definition
A vertical plane that is at a right angle to the median plane. Divides the body into front and back portions.
Term
Transverse Horizontal Plane
Definition
A plane at a right angle to the median plane. Divides the body into upper and lower portions.
Term
Superior
Definition
Situated above another structure; nearer to the head.
Term
Inferior
Definition
Situated below another structure; nearer the foot.
Term
Cranial
Definition
Related to the cranium (head); toward the head.
Term
Caudal
Definition
Toward the tail region (coccyx); useful directional term for embryos.
Term
Anterior (ventral)
Definition
In front of; toward the front (belly) surface of the body.
Term
Posterior (dorsal)
Definition
In back of; toward the back surface of the body.
Term
Rostral
Definition
Used in place of anterior when describing parts of the brain; toward the rostrum (beak).
Term
Medial
Definition
Nearer the median plane; toward the midline.
Term
Lateral
Definition
Farther from the median plane; away from the midline.
Term
Proximal
Definition
For a limb, it refers to being nearer to the attachment of the limb to the trunk; for a linear structure, it refers to being nearer to the origin of the structure.
Term
Distal
Definition
For a limb, it refers to being farther form the attachment of the limb to the trunk; for a linear structure, it refers to being nearer to the origin of the structure.
Term
Superficial
Definition
Nearer to the surface of the body.
Term
Deep
Definition
Farther from the surface of the body.
Term
External
Definition
Away from the center of a body cavity or hollow part of an organ-used when describing layers of the body wall or layers in the wall of a hollow organ.
Term
Internal
Definition
Toward the center of a body cavity or hollow part of an organ- used when describing layers of the wall or layers in the wall for a hollow organ.
Term
Axial Skeleton
Definition
The skeletal elements along the central axis of the body.
Term
Appendicular Skeleton
Definition
the skeletal elements in the limbs (appendages).
Term
Neurocranium
Definition
is the "brain case" that houses the brain and its protective covering
Term
Viscerocranium
Definition
Facial skeleton
Term
"Broken Back"
Definition
The name given for compressed or fractured vertebral bodies. This is potentially dangerous to the spinal cord within the vertebral canal.
Term
Kyphosis
Definition
Is an increase in the curve of the thoracic spine. An exaggerated kyphosis in the thoracic region produces rounded shoulders and a "hump back." Can be caused by poor posture, disk problems, or osteoporosis.
Term
Lordosis
Definition
Is an increased in the curve of the lumbar spine. An exaggerated lordosis in the lumbar region justs the buttocks posteriorly and produces a "sway back" or "saddle back". Can be due to obesity or muscular problems in the hip region.
Term
Laminectomy
Definition
is the surgical removal of a lamina in order to expose the contents of the vertebral canal or to repair a herniated inter-vertebral disk.
Term
Maxillofacial Fractures
Definition
Involve the bones of the viscerocranium. They most often result from blunt injuries such as motor vehicle accidents, bar fights, sports trauma, occupational injuries, and falls.
Term
Median Sternotomy
Definition
an incision through the midline of the sternum allowing surgical access to the organs in the thoracic cavity.
Term
Osteoporosis
Definition
Is a disease of bones in which bone mineral density is reduced in bone tissue; this produces changes in the micro-anatomy of bones, weakens the bones, and increases the risk of fractures; it occurs in postmenopausal women and elderly men.
Term
Scoliosis
Definition
Is an abnormal lateral curvature of the vertebral column.
Term
Spina Bifida
Definition
Is a defect in the vertebral column marked by an absence of the vertebral arches, through which the spinal cord and/or its protective coverings may protrude.
Term
Spinal Fusion
Definition
Is the grafting of new bone-forming cells (from periosteum) between the bodies of adjacent vertebrae after damages inter-vertebral discs have be removed.
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