{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

section4 - Dr Weaver Sexual reproduction behavior memory...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Dr. Weaver 11/05/07 Sexual reproduction behavior  memory  language endocrine system release substances into body (usually through bloodstream) exocrine system release substances out of the body (tears, sweat, etc.) hormones two kinds of effects: organizing effects: modify growth and development of tissue activating effects: modify FUNCTIONING of existing structures endocrine/exocrine exocrine: released in ducts, targets mostly surface of the body, ex. Tears,  sweat endocrine: release directly in bloodstream, targets skin, organs, other  endocrine structure. Ex. Pituitary, thyroid, testes, ovaries hormones: hormones and neurotransmitters both are released in response to some stimuli some chemicals are both transmitters and hormones
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
hormones vs. transmitters neurotransmitters are released in really small amounts, hormones in larger  amounts. Hormones often released far from target tissue, neuros released directly at  target tissue Hormones released in bloodstream, neuros released into synapse Hormones are long lasting, neuros are short action Hormones elicit long-term readiness to respond, neuros elicit short term  reaction into single stimulus Types of hormones Simple amino acids (or derivatives) Peptides/proteins: amino acid chains Steroid hormones: based on the cholesterol molecule Action hormones Simple amino acids (or derivatives) Peptides/proteins: generally alter ionic membrane permeability Steroid hormones: enter into cell, influence the genetic expression within the  nucleus Gonadal hormones (sex hormones) Steroid-based Produced by the gonads (primarily) Regulated by the gonadotrophin (via the pituitary) All gonadal hormones are released in small amounts by the adrenal cortex Classes of gonadal hormones Androgens
Image of page 2
Primarily released by testes (but also adrenal cortex) Most common is testosterone Usually in higher concentrations in males Estrogen Primarily released by ovaries (also by adrenal cortex) Most common is estradiol Usually in higher concentrations in females Progestins  Primarily released by ovaries (also adrenal cortex) Most common is progesterone Usually in higher concentrations in females What controls and releases hormones? Hypothalamus: regulates but does not directly release hormones- “master  gland of the master gland” Pituitary gland: A. anterior pituitary, B. posterior pituitary Hypothalamus: releases various “releasing hormones” Anterior pituitary gland: releases TSH, LH, FSH, ACTH & prolactin
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the 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