Gland Endocrine glands secrete substances that circulate through the blood stream. The glands secrete their products through basal lamina into the blood stream. Basil lamina typically can be seen a layer around the glands to which a million maybe more tiny blood vessels are attached. These glands often secrete hormones which play an important role in maintaining homeostasis. The pineal gland, thymus gland, pituitary gland, thyroid gland, and the two adrenal glands are all endocrine glands. Exocrine glands secrete their products through a duct onto an outer surface of the body, such as the skin or the gastrointestinal tract. Secretion is
The Tell-Tale Brain The Tell-Tale Brain The Tell-Tale Brain: A Neuroscientist's Quest for What Makes Us Human is a 2010 nonfiction book by V. S. Ramachandran that explores, from a neurological viewpoint, the uniqueness of human nature. Ramachandran explores various aspects of visual perception and cognition to argue that humans are unique among species. For example, he notes that although animals show cortical remapping after the loss of a limb, the plasticity seen in the human brain (after amputation) is much more dramatic. Ramachandran discusses seven main concepts which define the human aspect of self and how each may be disrupted by a