Ch 2 - 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, -ism is a processs.
catabolism
Process whereby complex nutrients are broken down to simpler substances and energy is released.
Cata- means down, bol means to cast, -ism is a process.
cell
The fundamental unit of all living things (animal or plant). Cells are everywhere in the human body-every tissue, every organ is made up of these individual units.
The smallest living unit.

cell membrane
Structure surrounding and protecting the cell. It determines what enters and leaves the cell.

chromosomes
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 of the material 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. Here, large proteins are made from smaller protein pieces.

genes
Regions of DNA within each chromosome.
karyotype
Picture of chromosomes in the nucleus of a cell. The chromosomes are arranged in 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, -ism means a process.
mitochondria
Structures in the cytoplasm that provide the principal source of energy (miniature “power plants”) for the cell. Catabolism is the process that occurs in mitochondria. (From the Greek mitos meaning thread and chrondion meaning a granule.)

nucleus
Control center of the cell. It contains chromosomes and directs the activities of the cell.

ribosomes
Attached to the endoplasmic reticulum are ribosomes, which build long chains of proteins.

adipose tissue
Collection of fat cells.
cartilage
Flexible connective tissue often attached to bones at joints. Cartilage forms part of the external ear and the nose. Rings of cartilage surround the trachea.
epithelial cells
Skin cells that cover the outside of the body line the internal surfaces of organs.
histologist
Specialist in the study of tissues.
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
Windpipe (tube leading from the throat to the bronchial tubes).

ureter
One of 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
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 intestines; also called the abdomen or peritoneal cavity.

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)
Pertaining to the 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. The peritoneum attaches abdominal viscera to muscles and functions as a protective membrane (containing blood vessels and nerves) around the organs.
pleura
Double-folded membrane surrounding each lung. Pleural means pertaining to the pleura.
pleural cavity
Space between the pleural layers
spinal cavity
Space within the spinal column (backbones) containing the spinal cord. Also called the spinal canal.

thoracic cavity
Space in the chest containing the heart, lungs, bronchial tubes, trachea, esophagus, and other organs.

ventral (anterior)
Pertaining to the front.

hypochondriac (abdominopelvic regions)
Right and left upper regions beneath the ribs.

epigastric (abdominopelvic regions)
Middle upper region above the stomach.

lumbar (abdominopelvic regions)
Right and left middle regions near the waist.

umbilical (abdominopelvic regions)
Central region near the navel.

inguinal (abdominopelvic regions)
Right and left lower regions near the groin. Also called iliac regions.

hypogastric (abdominopelvic regions)
Middle lower region below the umbilical region.

RUQ (abdominopelvic quadrants)
Right upper quadrant. Contains the liver (right lobes), gallbladder, part of the pancreas, parts of the small and large intestines.

LUQ (abdominopelvic quadrants)
Left upper quadrant. Contains the liver (left lobe), stomach, spleen, part of the pancreas, parts of the small and large intestines.

RLQ (abdominopelvic quadrants)
Right lower quadrant. Contains parts of the small and large intestines, right ovary, right fallopian tube, appendix, right ureter.

LLQ (abdominopelvic quadrants)
Left lower quadrant. Contains parts of the small and large intestines, left ovary, left fallopian tube, left ureter.

cervical (divisions of the back)
Neck region (C1 to C7).

thoracic (divisions of the back)
Chest region (T1 to T12).

lumbar (divisions of the back)
Loin (waist) region (L1 to L5).

sacral (divisions of the back)
Region of the sacrum (S1 to S5).

coccygeal (divisions of the back)
Region of the coccyx (tailbone).

vertebra
Single backbone.
vertebrae
Backbones.
spinal column
Bone tissue surrounding the spinal cavity.
spinal cord
Nervous tissue within the spinal cavity.
disk (disc)
Pad of cartilage between vertebrae.
anterior (ventral)
Front surface of the body.

deep
Away from the surface.

distal
Far from the point of attachment to the trunk or far from the beginning of a structure.

frontal (coronal) plane
Vertical plane dividing the body or structure into anterior and posterior portions.

inferior (caudal)
Below another structure; pertaining to the tail or lower portion of the body.

lateral
Pertaining to the side.

medial
Pertaining to the middle or near the medial plane of the body.

posterior (dorsal)
Back surface of the body.

prone
Lying on the belly (face down, palms down).

proximal
Near the point of attachment to the trunk or near the beginning of a structure.

sagittal (lateral) plane
Lengthwise, vertical plane dividing the body or structure into right and left sides. From the Latin sagitta, meaning arrow. As an arrow is shot from a bow it enters the body in the sagittal plane, dividing right from left. The midsagittal plane divides the body into right and left halves.

superficial (cephalic)
Above another structure; pertaining to the head.

supine
Lying on the back (face up, palms up).

transverse (axial) plane
Horizontal (cross-sectional) plane dividing the body into upper and lower portions.

Digestive System
Mouth, pharynx (throat), esophagus, stomach, intestines (small and large), liver, gallbladder, pancreas

Urinary or Excretory System
Kidneys, ureters (tubes from the kidneys to the urinary bladder), urinary bladder, urethra (tube from the bladder to the outside of the body)

Respiratory System
Nose, pharynx, larynx (voice box), trachea (windpipe), broncial tubes, lungs (where the exchange of gases takes place)

Reproductive System
Female: Ovaries, fallopian tubes, uterus (womb), vagina, mammary glands

Endocrine System
Thyroid gland (in the neck), pituitary gland (at the base of the brain), sex glands (ovaries and testes), adrenal glands, pancreas (islets of Langerhans), parathyroid glands

Nervous System
Brain, spinal cord, nerves, and collections of nerves

Circulatory System
Heart, blood vessels (arteries, veins, and capillaries), lymphatic vessels and nodes, spleen, thymus gland

Musculoskeletal System
Muscles, bones, and joints

Skin and Sense Organs System
Skin, hair, nails, sweat glands, and sebaceous (oil) glands; eye, ear, nose, tongue
