The body cavity between the diaphragm and pelvic brim.
Pertaining to the abdomen
A method of medical imaging that uses X rays and a computer to create an image of a thin section of the body.
A change in the relative frequencies of alleles in a population over a period of time; the mechanism that produces adaptations in human form and function.
Relatively far from the body surface; opposite of superficial.
A self-corrective mechanism that underlies most homeostasis in which a body change is detected and responses are activated that reverse the change.
The region from elbow to wrist; the forearm.
Relatively close to the surface; opposite of deep.
That park of the body excluding the head, neck and appendages.
The narrowing of a blood vessel due to muscular constriction of its tunica media.
The widening of a blood vessel due to relaxation of the muscle of its tunica media and the outward pressure of the blood exerted against the wall.
The thick medial partition of the thoracic cavity that separates one pleural cavity from the other and contains the heart, great blood vessels, and thymus.
The organs contained in the dorsal and ventral body cavities, such as the brain, heart, lungs, stomach, intestines, and kidneys.
Development of a relatively unspecialized cell into one with a more specific structure and function
Away from the center of the body or of an organ, as in peripheral vision and peripheral blood vessels.
A high-energy, penetrating electromagnetic ray with wavelengths in the range of 0.1 to 10 nm; used in diagnosis and therapy.
Any species of primate classified in the family hominidae, characterized by bipedal locomotion, relatively large brains, and usually articulate speech; currently represented only by homo sapiens but including extinct species of homo and australopithecus
position emission tomography
A method of producing a computerized image of the physiological state of a tissue using injected radioisotopes that emit positrons.
Pertaining to the head, neck and trunk; the part of the body excluding the appendicular portion.
The smallest subdivision of a tissue considered to be alive; consists of a plasma membrane enclosing cytoplasm and, in most cases, a nucleus.
Pertaining to a wall, as in the parietal cells of the gastric glands and parietal bone of the skull.
A double-walled serous membrane that encloses each lung.
Structure of the body.
Pertaining to the extremities and their supporting skeletal girdles
A state of continual change that is controlled within narrow limits, as in homeostasis and chemical equilibrium.
Pertaining to the groin.
A membrane such as the peritoneum, pleura, or pericardium that lines a body cavity or covers the external surfaces of the viscera; composed of a simple squamous mesothelium and a thin layer of areolar connective tissue.
The habit of walking on two legs; a defining characteristic of the family hominidae that underlies many skeletal and other characteristics of humans.
A cell or organ specialized to detect a stimulus, such as a taste cell or the eye.
An evolutionary process leading to the establishment of species characteristics that favor survival and reproduction
In the normal anatomical location
The entire organism
Pertaining to the leg proper or to the crus of an organ
The study of cell structure and function
Located relatively close to the medial axis of the body, as in the central nervous system; opposite of peripheral
An informed conjecture about a phenomenon that is capable of being tested and potentially falsified by experimentation or data collection.
A reference posture that allows for standardized anatomical terminology. A subject in anatomical position is standing with the feet flat on the floor and slightly apart, and the palms and eyes directed forward
A serous membrane that lines the peritoneal cavity of the abdomen and covers the mesenteries and viscera
Relatively near a point of origin or attachment; for example, the shoulder is proximal to the elbow. Compare distal.
The leg proper; the region from the knee to the ankle
A serous membrane that binds the intestines together and suspends them from the abdominal wall; the visceral continuation of the peritoneum
A chemical or physical agent in a cell's surroundings that is capable of creating a physiological response in the cell; especially agents detected by sensory cells, such as chemicals, light and pressure
The functional processes of the body.
An explanatory statement, or set of statements, that concisely summarizes the state of knowledge on a phenomenon and provides direction for further study; for example, the fluid mosaic theory of the plasma membrane and the sliding filament theory of muscle contraction.
The plane that divides the body into equal right and left halves. Compare sagittal plane.
Any anatomical structure that is composed of at least two different tissue types, has recognizable structural boundaries, and has a discrete function different from the structures around it. Many organs are microscopic and many organs contain smaller organs, such as the skin containing numerous microscopic sense organs.
An anatomical plane that passes through the body or an organ from right to left and superior to inferior; also called a coronal plane
Away from the midline of an organ or midsagittal plane of the body; toward the side. Compare medial.
Any plane that extends from ventral to dorsal and cephalic to caudal, dividing the body into right and left portions. Compare midsagittal plane.