BIO270H1 Lecture Notes - Lecture 9: Smooth Muscle Tissue, Catecholamine, Prostate
Document Summary
Relies on chemical that bind to receptor on target cells. Share the same messenger (norepinephrine and epinephrine (can act as either a neurotransmitter or/and hormone)) Anterior pituitary: prolactin, growth hormone (gh), adrenocorticotropic hormone (acth) Ion regulation stress response metabolism, sex drive (fem) Since chemical messengers, receptor and cell signaling is similar in humans and other animals this suggests that we share a common ancestor. The brain (ptth) can send nerve signals to either the corpora allata or the prothoracic glands. The corpora allata releases juvenile hormone (in the larva (high), caterpillar (high) and pupa stage (low)) = allows the insect to stay juvenile. The prothoracic glands releases molting hormone (in the caterpillar, pupa and adult stage) = allows the animal to shed skin and change form (metamorphosis) Some hormones will have the same effect in different animals (gh increase growth rate in humans and fish)
