Anatomy and Physiology Lecture Notes.docx

Secretory products whole cells sebaceous glands page

Info icon This preview shows pages 6–10. Sign up to view the full content.

View Full Document Right Arrow Icon
-Secretory Products -Whole cells -Sebaceous glands *Page 161 Connective Tissue -Most abundant type of tissue -Functions: -Bind structures -Provide support and protection -Serve as frameworks -Fill spaces -Store fat -Produce blood cells -Protect against infections -Help repair tissue damage -Have an extracellular matrix made of protein fibers and ground substance Connective Cell Types Fibroblasts -Fixed cells -Most common cell -Large, star shaped -Produce fibers Mast Cells -Fixed cell -Releases heparin (blood clotting)
Image of page 6

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

View Full Document Right Arrow Icon
-Releases histamine Macrophages -Wandering cell -Phagocytic -Important in immunity and prevention of infection Connective Tissue Fibers Collagenous Fibers -Thick -Composed of collagen -Great tensile strength -Abundant in dense CT -Hold structures together -Appear white in abundance Elastic Fibers -Bundles of microfibrils embedded in elastin -Fibers branch -Elastic -Appear yellow in abundance -Vocal cords Reticular Fibers -Thin collagenous fibers -Highly branched -Form delicate supportive networks
Image of page 7
Connective Tissue Connective tissue proper: - Areolar -mainly fibroblasts -gel like ground substance -collagenous fibers -elastic fibers -binds skin to structures -beneath most epithelia -blood vessels nourish nearby epithelial cells -Adipose (fat) -adipocytes -cushions -insulates -stores fat -beneath skin -behind eyeballs -around kidneys and heart -between muscles - Reticular -composed of reticular fibers -supports internal organ walls -walls of liver, spleen Dense Connective Tissue - Dense regular -closely packed collagenous fibers -elastic fibers
Image of page 8

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

View Full Document Right Arrow Icon
-fibroblasts -very strong -binds body parts together -tendons, ligaments, dermis -poor blood supply; slow to heal - Dense irregular -randomly organized, thick, interwoven collagenous fibers -dermis of the skin -around skeletal muscle - Elastic -abundant in elastic fibers -some collagenous fibers -fibroblasts -attachments between bones -walls of large arteries, airways, heart
Image of page 9
Image of page 10
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