glands

Synapse

...er and to non-neuronal cells such as muscles or glands . Synapses form the circuits in which the neurons of the central nervous system interconnect. They are thus crucial to the biological computations that underlie perception and thought. They also provide the means through which the nervous system...

Skin

...ssels, nerves, hair follicles, smooth muscle , glands and lymphatic tissue . It is made up of dense c...ytes (fat storage) and macrophages . Sebaceous glands are exocrine glands which produce sebum , a mixture of lipids and waxy substances: lubrication, wa...

Semen

... of viscous mucus secreted by the bulbourethral glands contributes to the cohesive jelly-like texture of semen. Seminal plasma of humans contains a complex range of organic and inorganic constituents. They include metal and salt ions , sugars , lipids , steroid hormones , enzymes , prost...

Malaria

...arry Plasmodium sporozoites in their salivary glands . If they bite a person, which they usually do starting at dusk and during the night, the sporozoites enter the person's body via the mosquito's saliva, migrate to the liver where they multiply within hepatic liver cells. They then turn into meroz...

Leaf

... dots; dotted with depressions or with translucent glands or colored dots. rugose: deeply wrinkled; with veins clearly visible. scurfy: covered with tiny, broad scalelike particles. tuberculate: covered with tubercles; covered with warty prominences. verrucose: warted, with warty outgrowths. viscid, v...

Hormone

...st known hormones are those produced by endocrine glands of vertebrate animals, but hormones are produce... of regulatory molecules. The classical endocrine glands and their hormone products are specialized to serve regulation on the overall organism level, but c...

Herpetology

... of eggs or birth of young. Their skins have many glands and are often toxic. Reptiles, by contrast, have a dry watertight skin, usually protected by scales , that normally has few if any glands. The reptilian heart is a three-chambered one (four-chambered in the case of crocodilians), and living reptili...

Digestion

...with the teeth . The process stimulates exocrine glands in the mouth to release digestive enzymes such ... - is in the stomach and stimulates the gastric glands to secrete pepsinogen and hydrochloric acid . Secretion of gastrin is stimulated by food arrivin...

Carolus Linnaeus

...The group " mammalia " are named for their mammary glands because one of the defining characteristics of mammals is that they nurse their young. (Of all the features distinguishing the mammals from other animals, Linnaeus may have picked this one because of his views on the importance of natural motherhood....

Cancer

...thelial cells , e.g. skin , digestive tract or glands . Leukemia starts in the bone marrow stem cells . Lymphoma is a cancer originating in lymphatic tissue . Melanoma arises in melanocytes . Sarcoma begins in the connective tissue of bone or muscle . Teratoma begins within germ cel...

Blood

...er , while hormones are produced by the endocrine glands and the watery fraction maintained by the gut and the kidney . Blood cells are degraded by the spleen and the Kuppfer cells in the liver. The liver also clears proteins and amino acids (the kidney secretes many small proteins into the uri...