(Prelims) Composition of the body Flashcards
Determines the character and degree of radn interaction that occurs
Atomic composition
Atomic composition of the body
60% hydogen
25.7% oxygen
10.7% carbon
2.4% nitrogen
0.8% trace elements
0.2% calcium
0.1% phosphorus
0.1% sulfur
HO Car Ni Trace CalPS
Defines the nature of radn response
Molecular and tissue compositions
Molecular compositions of the body
80% water
15% protein
2% lipids
1% carbohydrates
1% nucleic acid
1% other
Water ProLip CarboNO
Tissue composition of the body
43% muscle
14% fat
12% organs
10% skeleton
8% blood
6% subq tissue
4% bone marrow
3% skin
Mus FOrS BSub BSkin
Immature cells
Undifferentiated/ precurosr/ stem cells
Sensitivity of a cell to radn is determined somewhat by its (1) and (2)
- maturity
- functional role
Cells and tissue systems are identified by —
cell proliferation rate
Process of a single cell to multiply (reproduction)
Cell proliferation rate
Substitute for cell death
Reproduction
Cell types w high radiosensitivity
Lymphocytes
Spermatogonia
Erythroblasts
Intestinal crypt cells
High LIES
Cell types w intermediate radiosensitivity
Endothelial cells
Osteoblasts
Spermatids
Fibroblasts
InterFOES
Cell types w low radiosensitivity
Muscle cells
Nerve cells
Covering of tissue, lines all exposed surfaces of the body
Epithelium tissue
Epithelium tissue is found where?
Skin, BV, abdominal and chest cavities, GI tract
Epi Cabs GIT
High in protein (fibers); Muscle tisse
Connective and supporting tissue
Binds tissues and organs together
Connective tissue
Connective and supporting tissue is found where?
Ligament and cartilage
Can contract
Muscle tissue
Muscle tissues are found where?
Throughout the body
Specialized cells (long, thin extensions drom cell to distant parts of the body)
Neurons
Avenue of electrical impulses
Neurons
Parts of a neuron
Cell body
Dendrites
Axon
Suuport function of the nervous tissue
Neuroglia
