Body as Whole ch. 2 Flashcards
(33 cards)
Cell
the fundamental unit of all living things
cell membrane
surrounds and protects the cell but 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 formation of the cell.
chromosomes
rod-like structures within the nucleus.
genes
contains a chemical called a DNA
karyotype
a photograph of an individual’s chromosomes, arranged by size, shape, and numbers.
cytoplasm
includes all material outside the nucleus and enclosed by the cell membrane.
cyt/o = cell
plasm = formation
mitochondria
small sausage-shaped bodies that provide the principal source of energy for the cell.
catabolism
chemical process that complex foods such as sugar and fat are broken down into simpler substances and energy is released by the mitochondria.
provides the energy for cells to do the work of the body.
endoplasmic reticulum
a network of canals within the cell. canals are cellular tunnel systems that manufacture proteins for the cell.
ribosomes
attached to the endoplasmic reticulum which build long chains of proteins.
anabolism
the process of building large proteins from small proteins pieces called amino acids. this occurs on the endoplasmic reticulum.
metabolism
the total of the chemical processes occuring in a cell. anabolism+catabolism meta = change bol = to cast ism = process
muscle cell
long and slender and contains fibers that aid in contracting and relaxing
adipose tissue
Skin cells collection of fat cells
cartilage
flexible connective tissue often attached to bones and joints.
epithelial cells
skin cells that cover the outside of the body line the internal surfaces of organs
histologist
specialist in the study of tissue
larynx
voice box; located at the upper part of the trachea.
pharynx
throat; serves as the common passageway for food.s
pituitary gland
endocrine gland at the base of the brain
thyroid gland
endocrine gland that surrounds the trachea in the neck
trachea
windpipe
ureter
one of two tubes, each leading from a single kidney to the urinary bladder