Bio_1A_Lecture_21_Hormones

Bio_1A_Lecture_21_Hormones - C O M M U N IC A T IO N a n d...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
COMMUNICATION and INTEGRATION within the ORGANISM Chemical communication - the Endocrine System
Image of page 1

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

View Full Document Right Arrow Icon
(a) gap junctions direct cellular communication (b) autocrine & paracrine signals (c) endocrine (hormone) (d) neurocrine (neurotransmitter) (e) neurohormone Means of cellular communication example: cardiac muscle cells examples: interleukins (cytokines); local factors like NO (nitric oxide) examples: secretions from most endocrine glands examples: hypothalamic hormones examples: typical nerve-nerve or nerve-muscle connectioin
Image of page 2
How do we get such a variety of responses?? Second , for example, Different intracellular proteins different cell responses Third , for example, Different receptors different cell responses Epinephrine α receptor Epinephrine β receptor Epinephrine β receptor Vessel constricts Vessel dilates Intestinal blood vessel Skeletal muscle blood vessel Liver cell Glycogen deposits Glycogen breaks down and glucose is released from cell First , we have a variety of hormones
Image of page 3

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

View Full Document Right Arrow Icon
3 STEROID HORMONES -- membrane permeable There are 3 kinds of hormones e.g., CATECHOLAMINE HORMONES (& neurotransmitters) 1 AMINO ACID derivatives Nor-adrenaline Adrenaline 2 PEPTIDE HORMONES -- many; water soluble & cell im permeant (amino acid polymers) Different Hormones
Image of page 4
STEROID HORMONES from adrenal cortex & gonads HO CHOLESTEROL
Image of page 5

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

View Full Document Right Arrow Icon
Image of page 6
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