NOTES-Chapter 47 - Chapter 47 Chemical Signals in Animals...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 47: Chemical Signals in Animals There are six categories of chemical signals o Autocrine signals-act on the same cell that secretes them o Paracrine Signals-diffuse locally and act on neighboring cells (insulin and glucagon) o Endocrine Signals-are hormones carried between cells by blood or other body fluids o Neural signals-diffuse a short distance between neurons o Neroendocrine signals- are released from neurons but are carried by blood or other body fluids and act on distant cells o Pheromones- are released into the environment and act on a different individual Horomone Signaling Pathways o Endocrine Pathway Stiumulus-endocrine cell-endocrine signal-effector cell-response Ex: acid, intestine, need to neutralize the acid using chemical secretin which goes into the blood which secretes bicarbonate to neutralize acid in the pancreas o Neuroendicrine pathway Stimulus-sensor cell- neural signal-cns- neuroendocrine signal- effector cell-response Ex: dehydration, hypothalamus releases hormone ADH which is an antidiuretic hormone which goes to the kidney and collective tubules with aquaporins. ADH opens aquaporins and kidney reabsorbs water o Neuroendocrine to endocrine pathway Stimulus, sensor cell, neural signal, cns, neuroendocrine signal, endocrine cell, endocrine signal, effector cell, response Ex: stress stimulates the endocrine signal CRH which is a releasing
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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