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

• 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

Cartilage• 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• 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)

• 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

• 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.

Neuron• 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• Spinal Cord • Brain

Reproductive Tissue• Organs secrete a variety of hormones,

especially active during puberty, which play a vital roles in development and function of the sex organs and other organs in the body.

• Purpose is to produce fertile offspring.

Spermatogonium• Stem cell for sperm

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

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• http://www.stegen.k12.mo.us/tchrpges/sghs/ksulkowski../images/

simplecub.jpg• http://www.histology.leeds.ac.uk/tissue_types/connective/

connective_tissue_types.php• http://www.meddean.luc.edu/lumen/meded/Histo/frames/h_frame7.html• http://www.lab.anhb.uwa.edu.au/mb140/corepages/connective/connect.htm

#reticular

• http://biology.clc.uc.edu/fankhauser/Labs/Anatomy_%26_Physiology/A%26P201/Connective_Tissues/Cartilage.htm

• http://www.siumed.edu/~dking2/intro/bldcells.htm• http://www.lab.anhb.uwa.edu.au/mb140/corepages/nervous/nervous.htm#

labcord• http://www.webpathology.com/image.asp?case=27&n=2• My AP Bio textbook: Principles of Life

• My Anatomy/Physiology textbook: Human Anatomy & Physiology