Terms Pertaining to the body as a whole Flashcards
anabolism
process of building up large proteins from small protein pieces called amino acids. Ana- means up, bol means to cast, and -ism is a process
catabolism
process whereby complex nutrients are broken down to simpler substances and energy is released. Cata- means down, bol means to cast, and -ism is a process
cell membrane
structure surrounding and protecting the cell. It determines what enters and leaves the cell
chromosome
rod-shaped structures in the nucleus that contain regions of DNA called genes. There are 46 chromosomes (23 pairs) in every cell except for the egg and sperm cells, which contain only 23 individual, unpaired chromosomes
cytoplasm
all the materials that is outside the nucleus and yet contained within the cell membrane.
DNA
chemical found within each chromosome. Arranged like a sequence of recipes in code, it directs the activities of the cell
endoplasmic reticulum
network of canals within the cytoplasm of the cell. Large proteins are made from smaller protein peices
genes
regions of DNA within each chromosomes
karyotype
picture of chromosomes in the nucleus of the cell. The chromosomes are arranged in the numerical order to determine their number and structure
metabolism
total of the chemical processes in a cell. It includes catabolism and anabolism. Meta- means change, bol means to cast, and -ism means a process
mitochondria
structures in the cytoplasm that provide the principle source of energy (miniature “power plants”) for the cell. Catabolism is the process that occurs in mitochondria
nucleus
control center of the cell. It contains chromosomes and directs the activities of the cell
adipose tissue
collection of fat cells
cartilage
flexible connective tissue attached to bones at joints. For ex: it surrounds the trachea and forms part of the external ear and nose
epithelial cells
skin cells that cover the outside of the body and line the internal surfaces of organs
histologist
specialist in the study of cells
larynx
“voice box”, located at the upper part of the trachea
pharynx
throat. The pharynx serves as the common passageway for food (from the mouth going to the esophagus) and air (from the nose to the trachea)
pituitary gland
endocrine gland at the base of the brain
thyroid gland
endocrine gland that surrounds the trachea in the neck
trachea
“wind pipe” (tube leading from the throat to the bronchial tubes)
ureter
one of the two tubes, each leading from a single kidney to the urinary bladder.
urethra
tube from the urinary bladder to the outside of the body
uterus
the womb. The organ that holds the embryo/fetus as it develops
viscera
internal organs
abdominal cavity
space below the chest containing organs such as the liver, stomach, gallbladder, and the intestines; also called the abdomen
cranial cavity
space in the head containing the brain and surrounded by the skull. Cranial means pertaining to the skull
diaphragm
muscle separating the abdominal and thoracic cavities. The diaphragm moves up and down and aids in breathing
dorsal (posterior)
back
mediastinum
centrally located space outside of and between the lungs
pelvic cavity
space below the abdomen containing portions of the intestines, rectum, urinary bladder and reproductive organs.Pelvic means pertaining to the pelvis, composed of the hip bones surrounding the pelvic cavity
peritoneum
double-folded membrane surrounding the abdominal cavity
pleura
double-folded membrane surrounding each lung
pleura cavity
space between the pleural layers
spinal cavity
space within the spinal column (backbones) containing the spinal cord. Also called the spinal cord
thoracic cavity
space in the chest containing the heart, lungs, bronchial tubes, trachea, esophagus, and other organs
ventral (anterior)
front
hypochondriac
right and left upper regions beneath the ribs
epigastric
middle upper region above the stomach
lumbar
right and left middle regions near the waist
umbilical
central region near the navel
inguinal
right and left lower regions near the groin. Also called the iliac regions
hypogastric
middle lower region below the umbilical region
RUQ
right upper quadrant
LUQ
left upper quadrant
RLQ
right lower quadrant
LLQ
left lower quadrant