#anterior
- Adenohypophysis — The anterior and intermediate lobe of the hypophysis (pituitary gland), possessing an epithelial-glandular structure distinct from the neurohypophysis; it is responsible for the synthesis and secretion of most essential trophic hormones, such as growth hormone (GH), prolactin, ACTH, TSH, LH, and FSH. This structural component regulates the metabolic activity and homeostasis of the entire endocrine system through complex feedback mechanisms.
- Antecedence — The state or quality of being antecedent; temporal, logical, or causal priority of a fact, phenomenon, or event in relation to another. In legal and philosophical terms, it defines the structural relationship through which a cause or prior condition necessarily precedes and determines the emergence of an effect or consequence.
- Adenohypophysis — The anterior lobe of the pituitary gland, of ectodermal origin, with a highly specialized epithelial glandular structure; adenohypophysis. This major component of the endocrine system synthesizes and secretes fundamental tropic hormones into the bloodstream that control somatic growth, thyroid function, adrenal gland activity, and reproductive system dynamics, being directly regulated by hypothalamic neurohormones.
- Anterior pituitary — Pertaining to the anterior pituitary gland (the anterior lobe of the pituitary gland) or secreted by it; adenohypophyseal. The term describes cellular structures, vascular processes, or specific hormones (such as STH, ACTH, TSH, FSH, LH) responsible for regulating the activity of other endocrine glands and general metabolism.
- Anterior myoma — An extremely rare or specialized medical term used contextually in certain old treatises or histopathological gazetteers to describe a benign muscle tumor formation (myoma) located in an anterior position relative to the axis of a specific organ or anatomical structure. It represents a compound marker of structural localization and cellular diagnosis.
- Anterior — Situated before in space, preceding in time, or occupying a front position relative to a structural axis of reference. In anatomy and medicine, it describes the forward-facing surface of an organ, limb, or tissue, while in a temporal sense, it indicates an event, process, or stage that took place before the present moment or another established chronological point.
- Anteriority — The quality, state, or character of being anterior; temporal, logical, or structural priority or precedence of an event, phenomenon, right, or concept in relation to another. In a legal and philosophical sense, it represents a succession relationship that determines the validity, priority, or causal foundation of a factual state or legal act.
- Antero- — First element of learned composition serving to form neologisms with the meaning of 'anterior', 'before', 'placed in front', or 'oriented towards the frontal part'. It is heavily utilized in medical and anatomical terminology to indicate structural direction or spatial localization.
- Anteversion — A normal or pathological anatomical position of an organ or a bony structure, characterized by the forward tilting or displacement of its axis relative to reference planes. In orthopedics, it most commonly describes the forward orientation of the femoral neck or the anterior tilt of the pelvis.
- Antoptosis — An abnormal downward displacement or pathological sagging of an anterior anatomical structure or an organ located in the frontal part of the body. This structural phenomenon occurs as a result of the weakening of the supporting ligaments or surrounding muscular tissues, frequently requiring clinical imaging diagnosis and therapeutic intervention to restore the normal physiological position.