Chapter 2 Flashcards
Structural Organization of the Body
cells
tissues
organs
systems
Major parts of a cell:
chromosomes nucleus cell membrane cytoplasm mitochondria endoplasmic reticulum
cell membrane
Surrounds and protects the cell and also regulates what passes into and out of the cell.
nucleus
Controls the operations of the cell; directs cell division and determines the structure and function of the cell
chromosomes
rod-like structures within the nucleus
genes
Regions on chromosmes
DNA
Deoxyribonucleic acid; regulates the activities of the cell according to its sequence (arrangement into genes) on each chromosome
karyotype
A photograph of an individual’s chromosomes arranged by size, shape, and number.
cytoplasm
“Cell formation;” includes all of the material outside the nucleus and enclosed by the cell membrane.
mitochondria
Small sausage shaped bodies that provide the principal source of energy for the cell.
catabolism
Chemical process where complex foods such as sugar and fat are broken down into simpler substances and energy is released by the mitochondria
endoplasmic reticulum
A network of canals within the cell that manufacture proteins for the cell.
anabolism
The process of building long chains for proteins that occurs in the ER.
metabolism
the total of the chemical processes (anabolism and catabolism) occurring in a cell.
different tissue types
epithelial tissue
muscle tissue
connective tissue
nerve tissue
adipose tissue
collection of fat cells
cartilage
flexible connective tissue attached to bones at joints.
epithelial tissues
skin cells that cover the outside of the body and line the internal surfaces or organs
histologist
specialist in the study of tissues
larynx
“voice box”; located at the upper part of the trachea
pharynx
throat; serves as the common passageway for food and air
pituitary gland
endocrine gland at the base of the brain
thyroid gland
endocrine gland that surrounds the trachea in the neck
ureter
one of two tubes, each leading from a single kidney to the urinary bladder