Anatomy

thumb|350px|One of the large, detailed illustrations in Andreas Vesalius's [[De humani corporis fabrica 16th century, marking the rebirth of anatomy]]

The breasts are two prominences located on the upper ventral region of the torso in humans and other primates. Both sexes develop breasts from the same embryological tissues. The relative size and development of the breasts is a major secondary sex distinction between females and males. There is also considerable variation in size between individuals. Permanent breast growth during puberty is caused by estrogens in conjunction with the growth hormone. Female humans are the only mammals that permanently develop breasts at puberty; all other mammals develop their mammary tissue during the latter

The vagina (: vaginas or vaginae) is the elastic, muscular reproductive organ of the female genital tract through which mammals copulate and give birth. In humans, it extends from the vulval vestibule to the cervix (neck of the uterus). The vaginal introitus is normally partly covered by a thin layer of mucosal tissue called the hymen. The vagina also channels menstrual flow, which occurs in humans and closely related primates as part of the menstrual cycle.

cellular organizational level intermediate between cells and a complete organism; cells that are grouped together with a common function

thumb|Histologic specimen being placed on the stage of an optical microscope right|300px|thumb|Human lung tissue stained with [[hematoxylin and eosin as seen under a microscope]]

protective layer which lines the interior of hollow organs

standard terms for unambiguous description of relative placement of body parts

artery of the coronary circulation which transports blood into and out of the cardiac muscle

passive biological system that removes excess, unnecessary materials from the body of an organism

In biology, a septum (Latin for something that encloses; septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate.

cavity within an organ

Atresia is a condition in which an orifice or passage in the body is (usually abnormally) closed or absent.

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Indent on back of hand between tendons

capsule of a synovial joint

thumb|Left hemisphere of a human brain The term laterality refers to asymmetric preference, usage, skill, or specialization of symmetric body parts in an organism. Humans exhibit laterality in many ways, including limb dominance such as left and right handedness and footedness as well as specialization of one brain hemisphere over the other for certain functions such as language. Many other animals have also been shown to exhibit laterality in their own ways.

study of anatomy at the visible or macroscopic level

thumb|Chinese people|Chinese circus performer with [[craniosynostosis, 1927]] thumb|220px|A deformed sucker (cephalopod anatomy)|sucker cluster on an arm of an [[octopus]]

Aplasia (; from Greek a, "not", "no" + plasis, "formation") is a birth defect where an organ or tissue is wholly or largely absent. It is caused by a defect in a developmental process.

functional opening in the body of an organism

sac or cavity in any organ or tissue

body position in which one lies flat with the chest down and back up

large blood vessel in the arm

clear anatomical division or extension of an organ

size ratio of body parts

lying horizontally with the face and torso facing up

outermost layer of an organ

medical condition

veins draining blood from the pelvis and lower limbs

projection or outgrowth of tissue from a larger body

a notable variation from standard anatomy

large blood vessel in the arm

In anatomy, the interstitium is a contiguous fluid-filled space existing between a structural barrier, such as a cell membrane or the skin, and internal structures, such as organs, including muscles and the circulatory system. The fluid in this space is called interstitial fluid, this fluid comprises water and solutes which drains into the lymphatic system. The interstitial compartment is composed of connective and supporting tissues within the body called the extracellular matrix that are situated outside the blood, lymphatic vessels, and the parenchyma of organs. The role of the interstitium

part of an organ where structures such as blood vessels and nerves enter the body

part of the central nervous system that is involved with movement

study of the external features of the body of an animal

A commissure () is the location at which two objects abut or are joined. The term is used especially in the fields of anatomy and biology.

plane used to transect the human body, in order to describe the location of structures or the direction of movements

small, fleshy excrescence that is a normal part of an animal's anatomy

the positioning of the body of a prenatal fetus as it develops

Ectasia (), also called ectasis (), is dilation or distention of a hollow or tubular structure, either normal or pathophysiologic but usually the latter (except in atelectasis, where absence of ectasis is the problem).

part of the pelvis

lining of the stomach

3D model of human or animal anatomy

in anatomy, a furrow or fissure

anatomical structure

thumb|right|A natural endocast of the brain of the Taung Child, a young [[Australopithecus africanus, with the facial portion of the skull attached]] An endocast is the internal cast of a hollow object, often referring to the cranial vault in the study of brain development in humans and other organisms. Endocasts can be artificially made for examining the properties of a hollow, inaccessible space, or they may occur naturally through fossilization.

A dorsiventral (Lat. dorsum, "the back", venter, "the belly") organ is one that has two surfaces differing from each other in appearance and structure, as an ordinary leaf. This term has also been used as a synonym for dorsoventral organs, those that extend from a dorsal to a ventral surface. This word is also used to define body structure of an organism, e.g. flatworm have dorsiventrally flattened bodies.

thumb|Diagram showing the definition of telecanthus, or dystopia canthorum

branch of biology

anatomical feature in the wrist

In anatomy, the precordium or praecordium is the portion of the body over the heart and lower chest.

name for a variety of small anatomical masses

intermuscular space of the upper body

inner lining of the vagina

type of microscopic anatomy

relative thinning of the musculature of the back, situated along the medial border of the scapula

The archinephros, or holonephros, is a primitive kidney that has been retained by the larvae of hagfish and some caecilians. A recent author has referred to this structure as "the hypothetical primitive kidney of ancestral vertebrates". In the earliest vertebrates, this structure potentially extended the entire length of the body and consisted of paired segmental structures which drained via a pair of archinephrenic ducts into the cloaca. The entire structure arises from the nephric ridge, which in humans embryos gives rise to nephrotomes and the pronephroi at around 4 weeks gestation. The pro

orientation of the pelvis in respect to the thighbones and the rest of the body

thumb|270x270px|Rugae folds behind the anterior teeth in the hard palate of the mouth