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Chapter 2 - Vocabulary
Basic Vocabulary
125
Medical
Undergraduate 1
09/01/2012

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Term
Anatomic Reference Systems
Definition
used to describe the locations of the structural units of the body
Term
Anatomy
Definition
The study of the structures of the body
Term
Physiology
Definition
The study of functions of the structures of the body
Term
Anatomic Position
Definition
Describes the body standing in the standard position:
-Standing up straight so the body is erect and facing forward
-Holding the arms at the sides with the hands turned so that the palms face toward the front
Term
Body Planes
Definition
Imaginary vertical and horizontal lines used to divide the body into sections for descriptive purposes.
Term
Sagittal plane
Definition
a vertical plane that divides the body into unequal left and right portions
Term
Midsagittal Plane
Definition
the sagittal plane that divides the body into equal left and right halves
Term
frontal plane
Definition
a vertical plane that divides the body into anterior (front) and Posterior (back) portions
Term
Vertical plane
Definition
an up -and-down plane that is a right angle to the horizon
Term
Horizontal Plane
Definition
a flat, crosswise plane, such as the horizon
Term
Transverse plane
Definition
A horizontal plane that divides the body into superior (upper) and Inferior (lower) portions
Term
Ventral
Definition
refers to the front, or belly side, of the organ or body
Term
Dorsal
Definition
Refers to the back of the organ or body
Term
Anterior
Definition
Situated in the front; also means the front or forward part of an organ
Term
Posterior
Definition
situated in the back; also means the back part of an organ
Term
Superior
Definition
Uppermost, above, or toward the head
Term
Inferior
Definition
Lowermost, below, or toward the feet
Term
Cephalic
Definition
toward the head
Term
Caudal
Definition
toward the lower part of the body
Term
Proximal
Definition
situated nearest the midline or beginning of a body structure
Term
Distal
Definition
situated farthest from the midline or the beginning of a body structure
Term
lateral
Definition
the direction toward, or nearer, the side of the body, away from the midline
Term
Medial
Definition
the direction toward, or nearer, the midline
Term
Body Cavities
Definition
spaces within the body that contain and protect internal organs
Term
Dorsal Cavity
Definition
located along the back of the body and head, contains organs of the nervous system that coordinate body functions and is divided into two portions:
-Cranial Cavity
-Spinal Cavity
Term
Cranial Cavity
Definition
Located within the skull,surrounds and protects the brain
Term
Spinal Cavity
Definition
located within the spinal column, surrounds and protects the spinal cord
Term
Ventral Cavity
Definition
Located along the front of the body,contains the body organs that sustain homeostasis:
-thoracic cavity
-abdominal cavity
-pelvic cavity
Term
Homeostasis
Definition
the process through which the body maintains a constant internal environment
Term
Thoracic Cavity
Definition
Surrounds and protects the heart and lungs. Diaphragm separates it from the rest of the ventral cavities
Term
abdominal cavity
Definition
Contains primarily the major organs of digestion. commonly referred to as the abdomen
Term
pelvic cavity
Definition
the space formed by the hip bones and contains primarily the organs of the reproductive and excretory systems
Term
Inguinal
Definition
relating to the groin, refers to the entire lower area of the abdomen
Term
Regions of the Thorax and Abdomen
Definition
a descriptive system that divides the abdomen and lower portion
-Right and Left Hypochondriac Regions
-Epigastric Region
-Right and Left Lumbar Regions
-Umbilical Region
-Right and Left Iliac Regions
-Hypogastric Region
Term
Regions of the Thorax and Abdomen
Definition
a descriptive system that divides the abdomen and lower portion
-Right and Left Hypochondriac Regions
-Epigastric Region
-Right and Left Lumbar Regions
-Umbilical Region
-Right and Left Iliac Regions
-Hypogastric Region
Term
Right and left Hypochondriac Regions
Definition
Regions covered by the lower ribs
Term
Epigastric Region
Definition
Region above the stomach
Term
Right and left Lumbar Region
Definition
Regions near the inward curve of the spine
Term
Umbilical Region
Definition
Region surrounding the Umbilicus
Term
Umbilicus
Definition
Bellybutton
Term
Right and Left Iliac Regions
Definition
Regions above the hip bones
Term
Hypogastric Region
Definition
Region below the stomach
Term
Quadrant
Definition
Divided into four
Term
Peritoneum
Definition
A multilayered membrane that protects and holds the organs in place within the abdominal cavity
Term
Parietal Peritoneum
Definition
The outer layer of the Peritoneum that lines the interior of the abdominal wall
Term
Mesentery
Definition
A fused double layer of the parietal peritoneum that attaches part of the intestine to the interior abdominal wall
Term
Mesentery
Definition
A fused double layer of the parietal peritoneum that attaches part of the intestine to the interior abdominal wall
Term
Visceral Peritoneum
Definition
The inner layer of the peritoneum that surrounds the organs of the abdominal cavity
Term
Retroperitoneal
Definition
Located behind the peritoneum
Term
Cell
Definition
The basic structural and functional units of the body
Term
Cytology
Definition
The study of anatomy, physiology, pathology, and chemistry of the cell
Term
Cell Membrane
Definition
the tissue that surrounds and protects the contents of the cell by separating them from its external environment
Term
Cytoplasm
Definition
the material within the cell membrane that is not part of the nucleus
Term
Nucleus
Definition
Structure within the cell. Controls the cell and helps the cell divide
Term
Stem Cells
Definition
Unspecialized cells that are able to renew themselves for long periods of time by cell division
Term
Adult Stem Cells
Definition
Undifferentiated cells found among differentiated cells in a tissue or organ
Term
Embryonic Stem Cells
Definition
Undifferentiated cells that are unlike any specific adult cell. Can form any adult cell
Term
Gene
Definition
a fundamental physical and functional unit of heredity
Term
Genetics
Definition
The study of how genes are transferred from parents to their children and the role of genes in health and disease
Term
Dominant Gene
Definition
Inherited from either parent, the offspring will inherit that genetic condition or trait
Term
Recessive Gene
Definition
When inherited from both parents, the offspring will have that condition. When only inherited from one parent and the other parent donates a normal gene, the offspring will not have that condition
Term
Genome
Definition
Complete set of genetic information of an organism
Term
Chromosomes
Definition
The genetic structures located within the nucleus of each cell
Term
Somatic
Definition
Pertaining to the body in general
Term
Gamete
Definition
Sex Cell
Term
DNA
Definition
Located on the pairs of chromosomes in the nucleus of each cell. the basic structure of it is the same for all living organisms. Determines heredity, physical appearance, disease risks, and other traits
Term
Genetic Mutation
Definition
a change in the sequence of a DNA molecule
Term
Genetic Disorder
Definition
a pathological condition caused by an absent or defective gene
Term
Cystic Fibrosis
Definition
genetic disorder that is present at birth and affects both the respiratory and digestive systems
Term
Down Syndrome
Definition
a genetic variation that is associated with a characteristic facial appearance, learning disabilities, and physical abnormalities such as heart valve disease
Term
Hemophilia
Definition
a group of hereditary bleeding disorders in which a blood-clotting factor is missing. Characterized by spontaneous hemorrhage or severe bleeding following an injury
Term
Huntington's Disease
Definition
a genetic disorder that is passed from parent to child. Each child has a 50-50 chance of getting it from their parent. Causes nerve degeneration near midlife.
Term
Muscular Dystrophy
Definition
a group of genetic diseases that are characterized by progressive weakness and degeneration of the skeletal muscles that control movement
Term
Phenylketonuria
Definition
Genetic Disorder in which the essential digestive enzyme phenylalanine hydroxylase is missing. Can cause severe mental retardation if not treated.
Term
Tay-Sachs Disease
Definition
fatal genetic disorder in which harmful quantities of a fatty substance buildup in tissues and nerve cells in the brain
Term
Tissue
Definition
group or layer of specialized cells that join together to perform certain specific functions.
Term
Histology
Definition
The study of the structure, composition, and function of tissues
Term
Epithelial Tissues
Definition
form a protective covering for all of the internal and external surfaces of the body. These also form glands.
Term
Epithelium
Definition
the specialized epithelial tissue that forms the epidermis of the skin and the surface layer of mucous membranes
Term
Endothelium
Definition
The specialized epithelial tissue that line the blood and lymph vessels, body cavities, glands, and organs
Term
Connective Tissues
Definition
Support and connect organs and other body tissues:
-Dense Connective Tissues
-Adipose Tissue
-Loose Connective Tissue
-Liquid Connective Tissue
Term
Dense Connective Tissues
Definition
Bone and Cartilage, form the joints and framework of the body
Term
Adipose Tissue
Definition
Provides protective padding, insulation, and support.
Term
Loose Connective Tissue
Definition
Surrounds various organs and supports both nerve cells and blood cells
Term
Liquid Connective Tissues
Definition
Blood and lymph, transport nutrients a waste products throughout the body
Term
Muscle Tissue
Definition
Contains cells with the specialized ability to contract and relax
Term
Aplasia
Definition
The defective development, or the congenital absence, of an organ or tissue
Term
Hypoplasia
Definition
The incomplete development of an organ or tissue usually due to a deficiency in the number of cells
Term
Anaplasia
Definition
A change in the structure of cells and in their orientation to each other
Term
Dysplasia
Definition
the abnormal development or growth of cells, tissues, or organs
Term
gland
Definition
group of specialized epithelial cells that are capable of producing secretions
Term
Exocrine Glands
Definition
These Secrete chemical substance into ducts that lead either to organs or out of the body. Ex: Sweat Glands
Term
Endocrine Glands
Definition
Produce hormones. Secreted directly into the bloodstream, and are transported to organs and structures within the body
Term
Adenitis
Definition
Inflammation of a gland
Term
Organ
Definition
somewhat independent part of the body that performs a specific function
Term
Pathogen
Definition
Disease producing microorganism
Term
Communicable Disease
Definition
A Contagious Disease
Term
Indirect Contact Transmission
Definition
refers to situations in which a susceptible person is infected with a contaminated surface
Term
Bloodborne Transmission
Definition
the spread of a disease through the contact of blood or other body fluids that are contaminated
Term
Airborne Transmission
Definition
Occurs through contact with contaminated respiratory droplets spread by a cough or sneeze
Term
Food-borne and Waterborne transmission
Definition
caused by eating or drinking contaminated food
Term
Vector-borne Transmission
Definition
the spread of a certain disease due to the bite of a vector
Ex: West Nile Virus, Rabies
Term
Endemic
Definition
the ongoing presence of a disease within a population, group, or area
Term
Epidemic
Definition
A sudden and widespread outbreak of a disease within a specific population, group, or area
Term
Functional Disorder
Definition
produces symptoms for which no physiological or anatomical cause can be identified
Term
Iatrogenic illness
Definition
an unfavorable response medical due to prescribed treatment
Term
Iatrogenic illness
Definition
an unfavorable response medical due to prescribed treatment
Term
Idiopathic Disorder
Definition
an illness without known cause
Term
Infectious disease
Definition
an illness caused by living pathogenic organisms
Term
Nosocomial Infection
Definition
an disease acquired in a hospital or clinic setting
Term
Organic Disorder
Definition
produces symptoms caused by detectable physical changes in the body.
Ex: Chickenpox
Term
Organic Disorder
Definition
produces symptoms caused by detectable physical changes in the body.
Ex: Chickenpox
Term
Congenital Disorder
Definition
abnormal condition that exists at the time of birth
Term
Developmental Disorder
Definition
Birth defect; can result in an anomaly or malformation such as the absence of a limb
Term
anomaly
Definition
a deviation from what is regarded as normal
Term
atresia
Definition
describes the congenital absence of a normal body opening or the failure of a structure to be tubular
Term
Prenatal Influences
Definition
the mother's health, behavior, and prenatal medical care that she does or does not receive before birth
Term
Fetal Alcohol Syndrome
Definition
caused by mother's consumption of alcohol during pregnancy. Causes several abnormalities
Term
Geriatrics
Definition
the study of the medical problems and car of older people
Term
Autopsy
Definition
An examination of the body after death
Term
General Practitioner
Definition
provides ongoing care for patients of all ages
Term
Internist
Definition
a physician who specializes in diagnosing and treating diseases and disorders of the internal organs and related body systems
Term
Pediatrician
Definition
a physician who specializes in diagnosing, treating, and the prevention of disease in infants and children
Term
Geriatrician
Definition
a physician who specializes in the care of older people
Term
Hospitalist
Definition
Person who focuses on the general medical care of hospitalized patients
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