| adrenal medulla | The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine [Brenda]. | — |
| greater omentum | The greater omentum (also the great omentum, omentum majus, gastrocolic omentum, epiploon, or, especially in animals, caul) is a large fold of visceral peritoneum that hangs down from the stomach. It extends from the greater curvature of the stomach, passing in front of the small intestines and reflects on itself to ascend to the transverse colon before reaching to the posterior abdominal wall. The common anatomical term "epiploic" derives from "epiploon" from the Greek "epipleein" meaning to float or sail on, since the greater omentum appears to float on the surface of the intestines [Wikipedia: http://en.wikipedia.org/wiki/Greater_omentum]. | — |
| aorta | The great arterial trunk that carries blood from the heart to be distributed by branch arteries through the body [Brenda]. | — |
| salivary gland | The glands of the oral cavity whose combined secretion constitutes the saliva [Brenda]. | — |
| gum | The gingiva (sing. and plur.: gingiva), or gums, consists of the mucosal tissue that lies over the mandible and maxilla inside the mouth [Wikipedia: http://en.wikipedia.org/wiki/Gingiva]. | gingiva |
| nail bed | The formative layer of cells at the base of the fingernail or toenail; the matrix. Also called keratogenous membrane, matrix unguis. It is the area of modified epithelium beneath the nail, over which the nail plate slides forward as it grows [MedicalDictionary: http://medical-dictionary.thefreedictionary.com/nail+bed]. | keratogenous membrane; matrix unguis |
| olfactory apparatus | The entire system needed to have a sense of smell. This system involves at least 1,000 genes for the olfactory receptors. These genes are members of a large family of genes that encode signaling proteins required for the detection and discrimination of odors. Many of these olfactory genes are arranged in large clusters on chromosomes 6, 11, and 17, as well as distributed on other chromosomes. The mouse has more genes than do humans relating to reproduction, immunity and olfaction, suggesting that these physiological systems have been the focus of extensive innovation in rodents. It seems that sex, infection, and smell have been most on the mouse's evolutionary mind [MedTerms: http://www.medterms.com/script/main/art.asp?articlekey=39211]. | — |
| cardiac conducting system | The electrical conduction system that controls the heart rate. This system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood [MedTerms: http://www.medterms.com/script/main/art.asp?articlekey=8407]. | — |
| synovium | The dense connective-tissue membrane that secretes synovial fluid and that lines the ligamentous surfaces of articular capsules, tendon sheaths where free movement is necessary, and bursae [Brenda]. | — |
| spinal cord | The cord of nervous tissue that extends from the brain lengthwise along the back in the vertebral canal, gives off the pairs of spinal nerves, carries impulses to and from the brain, and serves as a center for initiating and coordinating many reflex acts [Brenda]. | — |
| femur | The bone that extends from the pelvis to the knee, being the longest and largest bone in the body; its head articulates with the acetabulum of the hip bone, and distally, the femur, along with the patella and tibia, forms the knee joint [Brenda]. | — |
| arterial intima | The arterial intima incldues the endothelium, interla elastic lamina, and all intervening tissues [Stehbens, 1995: http://www.deepdyve.com/lp/elsevier/definition-of-the-arterial-intima-LB2GoUv3it]. | — |
| germinal center | The area in the center of a lymph node containing aggregations of actively proliferating lymphocytes [Brenda]. | — |
| venous adventitia | The adventitia (tunica adventitia) is the outer coat of the vessel, and consists of connective tissue, nerves and vessel capillaries (vasa vasorum). It links the vessels to the surrounding tissues [Gray's Anatomy]. | — |
| exocrine pancreas | That part of the pancreas that acts as an exocrine gland, consisting of the pancreatic acini, which produce pancreatic juice and secrete it into the duodenum to aid in protein digestion [Brenda]. | — |
| T cells | 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]. | — |
| T cell progenitor | T cells begin their development as a proginotor with the bone marrow but complete their differentiation with the thymus [Awong et al., 2011: http://www.ncbi.nlm.nih.gov/pubmed/21622245]. T cell progenitors are CD34+ peripheral blood mononuclear cells which can be isolated from the blood or the bone marrow [Daniel Wuttke]. | — |
| palatine tonsil | Palatine tonsils are the tonsils that can be seen on the left and right sides at the back of the throat [Brenda]. | — |
| myeloid progenitor cell | One of the two stem cells derived from hematopoietic stem cells, the other being the lymphoid progenitor cell. Derived from these myeloid progenitor cells are the erythroid progenitor cells and the myeloid cells [Brenda]. | — |
| smooth muscle | Muscle tissue that lacks cross striations, that is made up of elongated spindle-shaped cells having a central nucleus, and that is found in vertebrate visceral structures (as the stomach and bladder) as thin sheets performing functions not subject to conscious control by the mind and in all or most of the musculature of invertebrates other than arthropods [Brenda]. | — |
| atrium | In the heart, the atrium is an upper chamber found on both sides of the heart. The left atrium receives red, oxygenated blood from the lungs by way of the pulmonary veins. The right atrium receives dark red blood from the other parts of the body [Brenda]. | — |
| ventricle | In the heart, a ventricle is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs [Wikipedia: http://en.wikipedia.org/wiki/Ventricle_(heart)]. | — |
| ligament | In anatomy, the term ligament is used to denote any of three types of structures. Most commonly, it refers to fibrous tissue that connects bones to other bones and is also known as articular ligament, articular larua, fibrous ligament, or true ligament [Wikipedia: http://en.wikipedia.org/wiki/Ligament]. | — |
| hematopoietic stem cells | Hematopoietic stem cells (HSCs), also spelled hæmatopoietic stem cells, are multipotent stem cells that give rise to all the blood cell types from the myeloid (monocytes and macrophages, neutrophils, basophils, eosinophils, erythrocytes, megakaryocytes/platelets, dendritic cells), and lymphoid lineages (T-cells, B-cells, NK-cells). The definition of haematopoietic stem cells has undergone considerable revision in the last two decades. The hematopoietic tissue contains cells with long-term and short-term regeneration capacities and committed multipotent, oligopotent, and unipotent progenitors. HSCs constitute 1:10.000 of cells in myeloid tissue [Wikipedia: http://en.wikipedia.org/wiki/Hematopoietic_stem_cell]. | — |
| coronary artery | Either of two arteries that arise one from the left and one from the right side of the aorta immediately above the semilunar valves and supply the tissues of the heart itself [Brenda]. | — |
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