| whole body | The main part of an animal body especially as distinguished from limbs and head [Brenda]. | — |
| vein | Any of the tubular branching vessels that carry blood from the capillaries toward the heart [Brenda]. | — |
| urinary system | The organs and passageways concerned with the production and excretion of urine, including the kidneys, ureters, urinary bladder, and urethra [Brenda]. | — |
| upper limb | The upper limb or upper extremity is the region in an animal extending from the deltoid region to the hand, including the arm, axilla and shoulder [Wikipedia: http://en.wikipedia.org/wiki/Upper_limb]. | — |
| tubule | A tubule is a very small tube or fistular structure. A system of surface-connected membranes in muscle that enables a nerve impulse to travel to the interior of the muscle fibre. In anatomy, a tubule is a minute tube lined with glandular epithelium [Wikipedia: http://en.wikipedia.org/wiki/Tubule]. | — |
| trachea | 1: The cartilaginous and membranous tube descending from the larynx and branching into the right and left main bronchi. It is kept patent by a series of about twenty transverse horseshoe-shaped cartilages. Called also windpipe.n2: One of a system of minute tubes ramifying throughout the body of a terrestrial arthropod and delivering air to the tissues. Called also tracheal tubule [Brenda]. | — |
| tonsil | The human palatine tonsils and the nasopharyngeal tonsil are lymphoepithelial tissues located in strategic areas of the oropharynx and nasopharynx, although most commonly, the term tonsils refers to the palatine tonsils that can be seen in the back of the throat [Brenda]. | faucial tonsil |
| thyroid | The thyroid gland or simply, the thyroid (ËθaɪrÉɪd ...), in vertebrate anatomy, is one of the largest endocrine glands. The thyroid gland is found in the neck, below the thyroid cartilage (which forms the laryngeal prominence, or "Adam's apple"). The isthmus (the bridge between the two lobes of the thyroid) is located inferior to the cricoid cartilage [Wikipedia: http://en.wikipedia.org/wiki/Thyroid]. | — |
| thymus | A glandular structure of largely lymphoid tissue that functions especially in the development of the body's immune system, is present in the young of most vertebrates typically in the upper anterior chest or at the base of the neck, and tends to atrophy in the adult [Brenda]. | — |
| thorax | 1: The part of the mammalian body between the neck and the abdomen; also: its cavity in which the heart and lungs lie.n2: The middle of the three chief divisions of the body of an insect; also: the corresponding part of a crustacean or an arachnid [Brenda]. | — |
| tendon | A tough cord or band of dense white fibrous connective tissue that unites a muscle with some other part (as a bone) and transmits the force which the muscle exerts [Brenda]. | — |
| T regulatory cell | Regulatory T cells (Treg), sometimes known as suppressor T cells, are a subpopulation of T cells which downregulates the immune system, maintains tolerance to self-antigens, and downregulates autoimmune disease. Mouse models have suggested that modulation of Tregs can treat autoimmune disease and cancer, and facilitate organ transplantation [Wikipedia: http://en.wikipedia.org/wiki/Regulatory_T_cell]. | — |
| T cell | T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity. They can be distinguished from other lymphocytes, such as B cells and natural killer cells (NK cells), by the presence of a T cell receptor (TCR) on the cell surface. They are called T cells because they mature in the thymus, and thus, can also be called thymocytes. There are several subsets of T cells, each with a distinct function [Wikipedia: http://en.wikipedia.org/wiki/T_cell]. | — |
| subcutaneous | The hypodermis, also called the hypoderm, subcutaneous tissue, or superficial fascia is the lowermost layer of the integumentary system in vertebrates. (Hypoderm and subcutaneous are from Greek and Latin words, respectively, for "beneath the skin.")Types of cells that are found in the hypodermis are fibroblasts, adipose cells, and macrophages. It is derived from the mesoderm, but unlike the dermis, it is not derived from the dermatome region of the mesoderm. In arthropods, the hypodermis is an epidermal layer of cells that secretes the chitinous cuticle. The term also refers to a layer of cells lying immediately below the epidermis of plants [Wikipedia: http://en.wikipedia.org/wiki/Subcutaneous_tissue]. | — |
| stromal cell | Connective tissue cells of an organ found in the loose connective tissue. These are most often associated with the uterine mucosa and the ovary as well as the hematopoietic system and elsewhere [Brenda]. | — |
| stomach | A dilatation of the alimentary canal of a vertebrate communicating anteriorly with the esophagus and posteriorly with the duodenum [Brenda]. | — |
| spleen | A highly vascular ductless organ that is located in the left abdominal region near the stomach or intestine of most vertebrates and is concerned with final destruction of red blood cells, filtration and storage of blood, and production of lymphocytes [Brenda]. | — |
| skin | The integument of an animal (as a fur-bearing mammal or a bird) separated from the body usually with its hair or feathers [Brenda]. | — |
| sinus | Sinus is a sack or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Each individual has four paired cavities located in the cranial bone or skull. These cavities are vital for a number of reasons [Wikipedia: http://en.wikipedia.org/wiki/Sinus_(anatomy)]. | — |
| reproductive system | In women, the organs that are directly involved in producing eggs and in conceiving and carrying babies. In men, the organs directly involved in creating, storing, and delivering sperm to fertilize an egg [Brenda]. | — |
| pleura | The delicate serous membrane that lines each half of the thorax of mammals and is folded back over the surface of the lung of the same side [Brenda]. | — |
| plasma | Blood plasma is the straw-colored liquid component of blood in which the blood cells in whole blood are normally suspended. It makes up about 55% of the total blood volume. It is the intravascular fluid part of extracellular fluid (all body fluid outside of cells). It is mostly water (93% by volume) and contains dissolved proteins, glucose, clotting factors, mineral ions, hormones and carbon dioxide (plasma being the main medium for excretory product transportation). Plasma also serves as the protein reserve of the human body. It plays a vital role in intravascular osmotic effect that keeps electrolyte in balance form and protects the body from infection and other blood disorders [Wikipedia: http://en.wikipedia.org/wiki/Blood_plasma]. | — |
| pituitary gland | In vertebrate anatomy the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing 0.5 g (0.02 oz.) in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain, and rests in a small, bony cavity (sella turcica) covered by a dural fold (diaphragma sellae). The pituitary is functionally connected to the hypothalamus by the median eminence via a small tube called the infundibular stem (Pituitary stalk). The pituitary fossa, in which the pituitary gland sits, is situated in the sphenoid bone in the middle cranial fossa at the base of the brain. The pituitary gland secretes nine hormones that regulate homeostasis [Wikipedia: http://en.wikipedia.org/wiki/Pituitary_gland]. | — |
| pineal gland | A small, cone-shaped organ in the brain of most vertebrates that secretes the hormone melatonin [Brenda]. | — |
| pharynx | The part of the vertebrate alimentary canal between the cavity of the mouth and the esophagus.nThe pharynx of Nematodes is an efficient pump and forces food into the intestines [Brenda]. | — |
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