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Dense Connective. Can be regular, irregular, or elastic Regular: Primarily parallel collagen fibers, few elastic fibers, major cell type is fibroblast

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Dense connective
Dense Connective

  • Can be regular, irregular, or elastic

  • Regular:

    • Primarily parallel collagen fibers, few elastic fibers, major cell type is fibroblast

    • Attaches muscles to bones or to other muscles; attaches bones to bones; withstands great tensile stress when pulling force is applied in one direction

    • Located in tendons, ligaments, aponeuroses

  • Irregular

    • Primarily irregularly arranges collagen fibers, some elastic but mostly fibroblasts

    • Withstands tension exerted in many directions; provides structural strength

    • Located in fibrous capsules of organs and of joints, dermis of skin, submucosa of digestive tract

  • Dense Irregular

  • Dense Regular

Dense elastic connective
(Dense) Elastic Connective

  • Contains a high proportion of elastic fibers

  • Allows tissue to recoil after stretching; maintains pulsatile flow of blood through arteries; aids passive recoil of lungs following inspiration

  • Located in walls of large arteries, withing ligaments associated w/ vertebral column, and within the walls of the bronchial tubes


  • Can be hyaline, elastic, or fibrocartilage

  • Hyaline:

    • Amorphous but firm matrix; collagen fibers form an imperceptible network; chondoblasts produce the matrix and when mature chondrocytes lie in lacunae

    • Supports and reinforces; resilient cushion; resists compressive stress

    • Located in embryonic skeleton, covers ends of long bones in joints, forms costal cartilages in ribs, cartilage in nose, trachea and larynx

  • Elastic:

    • Like hyaline but with more elastic fibers in matrix

    • Maintains the shape of a structure while allowing great flexibility

    • Supports external ear and epiglottis

  • Fibrocartilage:

    • Matrix similar to (less firm) hyaline; many thick collagen fibers predominate

    • Tensile strength allows it to absorb compressive shock

    • Located in intervertebral disks, pubic symphysis, knee joints

  • Hyaline

  • Elastic

  • Fibrocartilage

Bone osseous cells
Bone (Osseous) Cells

  • Can be compact or spongy bone

  • Hard, calcifies matrix containing many collagen fibers; osteocytes lie in lacunae; well-vascularized

  • Supports and protects; provides levers for the muscles to act on; stores calcium, minerals, fat; marrow inside bones is site for blood cell formation (hematopoiesis)

  • Located in bones

Blood rbcs and wbcs
Blood (RBCs and WBCs)

  • Red and white blood cells in a fluid matrix of plasma

  • Transports respiratory gases, nutrients, wastes, and other substances

  • Contained in blood vessels

Neural nervous tissue
Neural/Nervous Tissue

  • Nervous systems are composed of nerve cells/neurons and glia (support cells).

  • Neurons are organized into information-processing neural networks

  • The nervous system regulates and controls body functions; they respond to stimuli and transmit electrical impulses over substantial distances within the body.


  • Neurons are branching cells; cell processes may be quite long extend from the nucleus-containing body

  • Neurons transmit electrical signals from sensory receptors and to effectors which control their activity; support cells support and protect neurons

  • Located in brain, spinal cord, and nerves

Brain tissue
Brain Tissue

  • Spinal Cord

  • Brain

Reproductive tissue
Reproductive Tissue

  • Organs secrete a variety of hormones, especially active during puberty, which play a vital roles in development and function of the sex organsand other organs in the body.

  • Purpose is to produce fertile offspring.


  • Stem cell for sperm

  • Spermatocytes divide by mitosis until puberty, then all daughter cells become spermatogonia.

Developing follicle
Developing Follicle

  • The maturation of the follicle is part of the ovarian cycle

  • Process begins in ovaries and ends in ovulation

Web sites and texts
Web Sites and Texts









  • My AP Bio textbook: Principles of Life

  • My Anatomy/Physiology textbook: Human Anatomy & Physiology