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The muscular system is an organ system consisting of skeletal, smooth, and cardiac muscle. It permits movement of the body, maintains posture, and circulates blood throughout the body. [1] The muscular systems in vertebrates are controlled through the nervous system although some muscles (such as the cardiac muscle) can be completely autonomous.
The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland. The capillaries in the portal system are ...
Port (medical) Portal system. It is installed under the skin, with the tube connected to a vein. External access is with a needle through the yellow membrane. Port-a-Cath with needle assembly inserted. In medicine, a port is a small medical appliance that is installed beneath the skin. A catheter (plastic tube) connects the port to a vein.
The sympathoadrenal system is a physiological connection between the sympathetic nervous system and the adrenal medulla and is crucial in an organism's physiological response to outside stimuli. [1] When the body receives sensory information, the sympathetic nervous system sends a signal to preganglionic nerve fibers, which activate the adrenal ...
Portal 2: Lab Rat (2011) (first full appearance) Designed by. Michael Avon Oeming (young appearance) (Portal 2: Lab Rat) Andrea Wicklund (older appearance) (Portal 2: Lab Rat) Voiced by. Unknown (vocalizations in some music tracks) Doug Rattmann, often referred to as the " Ratman" is a character in both Portal and Portal 2.
HPG regulation in males, with the inhibin/activin system playing a similar role on GnRH-producing cells. The hypothalamus is located in the brain and secretes GnRH. GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis.
The paraventricular nucleus ( PVN, PVA, or PVH) is a nucleus in the hypothalamus. Anatomically, it is adjacent to the third ventricle and many of its neurons project to the posterior pituitary. These projecting neurons secrete oxytocin and a smaller amount of vasopressin, otherwise the nucleus also secretes corticotropin-releasing hormone (CRH ...
The human body is composed of elements including hydrogen, oxygen, carbon, calcium and phosphorus. These elements reside in trillions of cells and non-cellular components of the body. The adult male body is about 60% water for a total water content of some 42 litres (9.2 imp gal; 11 US gal).