** Anterior spinothalamic tract

** Anterior spinocerebellar tract

** Anterior choroidal artery

** Anterior cerebral artery ( a terminal branch )

** Anterior vitrectomy is the removal of the front portion of vitreous tissue.

** Anterior resection

** Anterior communicating artery: Connects both anterior cerebral arteries, within and along the floor of the cerebral vault.

** Anterior inferior cerebellar artery ( AICA )

** Anterior superior alveolar nerve

** Sub-specialties: Corneal surface disorders, Corneal surgery, Anterior Segment disorders and surgery, Keratorefractive surgery.

** Anterior, inferior limit of thoracic cavity ;

** Anterior humeral circumflex artery

** Anterior deltoid

** major and minor pectoral muscles

** A peculiar function of pectoral fins, highly developed in some fish, is the creation of the dynamic lifting force that assists some fish, such as sharks, in maintaining depth and also enables the " flight " for flying fish. Bigeye tuna Thunnus obesus showing finlets and keels. Drawing by Dr Tony Ayling

** In many fish, the pectoral fins aid in walking, especially in the lobe-like fins of some anglerfish and in the mudskipper.

** Certain rays of the pectoral fins may be adapted into finger-like projections, such as in sea robins and flying gurnards.

** Addison's disease is a rare disorder in which the adrenal glands do not produce sufficient amounts of glucocorticoids ( mainly cortisol ).

** Waterhouse – Friderichsen syndrome is adrenal gland failure due to bleeding into the adrenal glands, caused by severe bacterial infection.

** mammary glands

** Apocrine glands — a portion of the secreting cell's body is lost during secretion.

** Holocrine glands — the entire cell disintegrates to secrete its substances ( e. g., sebaceous glands )

** Merocrine glands — cells secrete their substances by exocytosis ( e. g., mucous and serous glands ).

** Supratrochlear glands: Situated above the medial epicondyle of the humerus, medial to the basilic vein, they drain the C7 and C8 dermatomes.

** Deltoideopectoral glands: Situated between the pectoralis major and deltoid muscles inferior to the clavicle.

** Lateral glands

** Posterior or subscapular glands

** Central or intermediate glands

** Medial or subclavicular glands

** Following thyroidectomy, the parathyroid glands are located very close to the thyroid and are easily injured or even accidentally removed during thyroidectomy

** In DiGeorge Syndrome, a disease characterized by the failure of the third and fourth pharyngeal pouches to develop, the parathyroid glands do not form and there is thus a lack of PTH.

** Norepinephrine ( noradrenaline )-a neurotransmitter involved in sleep and wakefulness, attention, and feeding behavior, as well as a stress hormone released by the adrenal glands that regulates the sympathetic nervous system.

** adrenal glands ( see adrenal tumor )

** Benign tumors have mature-appearing glands in a fibrous stroma

** Carcinomas ( malignant tumors ) have invasive glands with crowded, atypical cells, frequent mitoses.