Gland in Biological Definition

Anatomy

... Rib Vertebrae Glands : Ductless gland Mammary gland Salivary gland ...

Brain

... diencephalon epithalamus pineal gland thalamus hypothalamus pituitary gland telencephalon archipallium ... system by a structure called the pituitary gland . It is hypothesized that developed brains ...

Kidney

... spleen . Superior to each kidney is an adrenal gland (also called the suprarenal gland ). The kidneys are retroperitoneal, which means ... the hypothalamus , which notifies the pituitary gland via negative feedback . The ...

Homeostasis

... the concentrations of water and a wide variety of ions . Most of these organs are controlled by hormones secreted from the pituitary gland , which in turn is directed by the hypothalamus . See also Acclimatization Biological rhythm Metabolism Apoptosis ...

Insulin

... One to three million islets of Langerhans (pancreatic islets) form the endocrine part of the pancreas , which is primarily an exocrine gland . The endocrine part accounts for only 2% of the total mass of the pancreas. Within the islets of Langerhans, beta cells constitute 60–80% of ...

Leaf

... with short hairs (cilia). ciliolate: minutely ciliate. floccose: with flocks of soft, woolly hairs, which tend to rub off. glandular: with a gland at the tip of the hair. hirsute: with rather rough or stiff hairs. hispid: with rigid, bristly hairs. hispidulous: minutely hispid. hoary: ...

Limbic system

... system and regulates blood pressure , heart rate , hunger , thirst , sexual arousal and the sleep/wake cycle. Connected to the pituitary gland and thus regulates the endocrine system. (Not all authors regard the hypothalamus as part of limbic system.) The limbic system is among the ...

Liver

... and indeed there have been at least two donor deaths out of the first several hundred cases. Analogous organs Arthropods have a digestive gland that functions like a combination of the liver and the pancreas . In insects this organ is known as the fat body . References The ...

Marcello Malpighi

... of human tongue. Some of his studies he made by vivisection . He also tried to study the anatomy of a brain but his conclusion that brain is a gland have been proved incorrect. He was also the first to discover and study human fingerprints . Despite of his anatomical studies, he was also one ...

Nephron

... of water reabsorbed is dependent on the permeability of the walls of the duct, regulated by ADH secreted by the posterior part of the pituitary gland . The more ADH, the more permeable the ducts, the more water reabsorbed; the less ADH, the less permeable the ducts, the less water reabsorbed. ...

Skin

... is the decreasing ability of skin to heal itself. Skin sagging is caused by the fall in elasticity. Skin also receives less blood flow and lower gland activity. In medicine , the branch concerned with the skin is called dermatology . The skin is subject to constant attack from without, and so ...