Animal Behavi23 - The control center of vertebrate...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Animal Behavior: Instinct Behavioral Endocrinology Introduction to Endocrinology Endocrinology is the study of hormones, chemical messengers that target organs and influence many processes, from growth to reproduction. Here we will consider only those hormones that influence behavior. Hormones are secreted by ductless glands and are carried through the body by the circulatory system. Hormones called neurosecretions are produced by neurosecretory cells in the nervous system and are carried through the body by both nerve axons and in the blood. Both the nervous system and the endocrine system act as feedback systems; the nervous system produces much faster results, whereas the endocrine system is slower acting, longer lasting, and produces more general responses. The endocrine system has been mostly evolutionarily static, meaning it is often highly similar between species.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The control center of vertebrate endocrine systems is the pituitary gland, located in the brain. The hypothalamus funnels information into the pituitary gland mostly via the osmotic balance in several key ganglion nuclei-- the optichiasm, superoptic, medial, lateral, dorsal, and ventral nuclei. The pituitary gland is really two glands formed from two separate embryonic structures. The anterior pituitary secretes hormones, including growth, thyroid stimulating, and follicle stimulating hormones, as well as prolactin. The posterior pituitary acts as a storage bag for hormones. It is responsible for oxytocin and antidiuretics, which control water balance. Hormones secreted by the pituitary are intended for target organs, which either produce other hormones in turn, or function in response to the pituitary signal....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern