Biology 106: Lab 1 Animal Histology

31 terms by Marinator617 

Create a new folder

Advertisement Upgrade to remove ads

Lab Science Course.

Four types of tissues found in animals

epithelial, connective, muscle, and nervous

Epithelial tissue classified as

simple or stratified

Simple Epithelial tissue

has only one layer of cells

Stratified Epithelial tissue

has several cells layers

Simple squamous epithelium

characterized by flattened, irregulary shaped cells that form a continuous sheet.

Simple cuboidal epithelium

characterized by cube-shaped cells with a nucleus that is usually round and centrally located.

Simple columnar epithelium

composed of cells that are taller than they are wide, and the nucleus is located towards the base of the cell.

Connective Tissue

characterized by a fluid, semisolid, or solid matrix in which cells and fibers are embedded; four general catergories.

Connective Tissue Proper, cartilage, bone, and blood

Four general categories of connective tissue

Connective tissue proper

loose connective tissue, dense regular connective tissue and adipose tissue comprise this.

Loose connective (areolar) tissue

characterized by fibers that are irregularly arranged in the matrix; two types of fibers are present: collagen and elastic.

Collagen fibers

appear pink.

Elastic Fibers

appear as blue-black strands randomly arranged in the matrix.

Dense Regular connective tissue

contains collagen fibers that are arranged in parallel. Between fibers are flattened rodlike nuclei of fibroblasts.

Adipose tissue

contains ___cells that are closely packed; cells appear empty because fat was removed during tissue preparation. Cytoplasm and nucleus located at periphery of cell.

Cartilage

connective tissue with semisolid matrix; within matrix are fibers and chondrocytes.

Chondrocytes

cartilage cells located within round-ovoid spaces called lacunae.

Hyaline Cartilage

composed of collagen and chondrocytes

Elastic Cartilage

contains collagen fibers, chondrocytes, and elastic fiber that are found between lacunae.

Bone

consists of a hard matrix of calcium salts; the calcium salt makes it hard.

Bone

characterized by central (Haversian) canal.

Bone

Lacunae, which hold the osteocyte (bone cells), are arranged in concentric rings around the central Haversian canal.

blood

composed of a fluid matrix.

Blood

numerous erythrocytes and few leukocytes present in matrix; some platelets scattered around.

Muscle

three types of this kind of tissue; composed of muscle fibers.

Skeletal muscle fibers

characterized by fibers that have light and dark striping or cross-striations. Each fiber is multinucleated; nuclei are located of priphery of each fiber.

Cardiac muscle fibers

have cross-striations and are branched; adjacent fibers are separated by dark-staining structures called intercalated disks; single nucleus in each cardiac muscle fiber.

Smooth muscle fibers

have no cross-striations; single elongated or ovoid nucleus is present in each fiber.

Nervous tissue

composed of neurons and neuroglia (neuroglial cells)

Neurons

consist of a cell body, dendrites, and an axon. Several Cytoplasmic processes radiate from the cell body, which holds the nucleus.

Neuroglial cells

cannot be distinguished because cytoplasm is unstained in tissue prep; however, nuclei are visible as dots.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set