Category: H

Any blood or formed element especially in invertebrates.  

The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins. The iron-porphyrin prosthetic group of a class of proteins called ”heme proteins.” The iron-containing complex of the hemoglobin molecule. Nonprotein, iron-containing substance in blood. The colored, insoluble component of hemoglobin, containing iron. Red-pigmented, non-protein, iron-containing part…

Cancers of the blood or bone marrow, including leukemia and lymphoma. Also called hematologic cancers.  

Disorders of the blood and blood forming tissues.  

Common conditions characterized by persistent or recurrent headaches. Headache syndrome classification systems may be based on etiology (e.g., vascular headache, post-traumatic headaches, etc.), temporal pattern (e.g., cluster headache, paroxysmal hemicrania, etc.), and precipitating factors (e.g., cough headache).  

Pain in the cranial region that may occur as an isolated and benign symptom or as a manifestation of a wide variety of conditions including subarachnoid hemorrhage; craniocerebral trauma; central nervous system infections; intracranial hypertension; and other disorders. In general, recurrent headaches that are not associated with a primary disease process are referred to as…

Shafts or openings on the surface of the skin through which hair grows. A small sac that extends from the epidermis into the subcutaneous tissue and which contains the individual hair root. The cells and tissue that surround the root of a hair. Tubular sheath of cells in the epidermis layer of the skin that…

An herb that induces sleep. Any agent that induces sleep. Although sedatives, narcotics, or anxiolytics in sufficient dosage may produce sleep as an incidental effect, the term hypnotic is appropriately reserved for drugs used primarily to produce sleep. A substance used to induce sleep; a treatment for insomnia; anesthesia. Relating to hypnosis and hypnotism. Referring…

A substance that stops or slows bleeding, used either internally or externally. (Examples: styptic pencil, Yerba Reuma.) An agent that stops or prevents hemorrhage; for example, phytomenadione (vitamin K) and thromboplastin. Hemostatics are used to control bleeding due to various causes and may be used in treating bleeding disorders, such as hemophilia. An agent that…

(Of leaves) produced or developing after the flowers.