a&p lab 6 hw

Match these vocabulary terms to their meanings.

- The middle portion of unspecialized mesoderm from which cartilage, bone, and blood develop is called MESENCHYME - Any tissues that exist in layers and form linings or coverings fall into the category of STRATIFIED EPITHELIA - RETICULAR CONNECTIVE TISSUE is the type of connective tissue that forms a structural net to support other cells - FIBROCARTILAGE is a type of cartilage with a net of collagen fibers to help resist compression and tension - The mature cells that live in cartilage and maintain the matrix around them are CHONDROCYTES

What physical force is best resisted by having multiple layers of oral squamous epithelium?

abrasion

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.

adipose

This type of connective tissue is primarily composed of cells.

adipose

What is not true of connective tissue?

all connective tissues contain elastic fibers

Squamous epithelial cells ________.

are thin and flat, like fish scales

This type of connective tissue is found under epithelia, packaging organs, and surrounding capillaries.

areolar

This connective tissue is made of hard calcified matrix and stores calcium and other minerals.

bone (osseous tissue)

Orthopedic surgeons are fond of saying, "It is better to break a bone than it is to tear a tendon or ligament." Why is this true?

broken bones heal faster and with less scar tissue because they are more vascularized than tendons or ligaments

________ muscle cells consist of branched uninucleate cells with junctions called as intercalated discs.

cardiac

This is the most abundant and widely distributed tissue type in the body.

connective

This tough, strong, connective tissue is found beneath the epithelial tissue of the skin. It is packed with collagen fibers that run in all different directions.

dense irregular

This connective tissue is packed with parallel collagen fibers, attaches muscles to bone, and can withstand great stress when pulled in one direction.

dense regular

This connective tissue looks like strands of wavy hair. It is very strong and attaches muscles to bones.

dense regular

This tissue type is a covering and lining tissue. It also includes glands.

epithelial

Explain why a buccal swab procedure should not cause bleeding.

epithelium is avascular. removing a few cells from the apical layer of the epithelium will not damage any blood vessels

Exocrine glands are considered to be a type of connective tissue because ________.

exocrine glands are epithelial tissue, not connective tissue

This is the toughest kind of cartilage. It is found in places that receive a lot of mechanical stress.

fibrocartilage

Cardiac muscle is found in the ________.

heart

What additional component associated with skin epithelium is not seen in oral epithelium?

keratin

Drag the labels onto the diagram to identify the cell types and matrix components of areolar connective tissue, a model connective tissue.

left column: macrophage fibroblast lymphocyte fat cell mast cell neutrophil right column: ground substance collagen fiber elastic fiber reticular fiber capillary

Drag the labels onto the diagram to identify the classes of epithelia based on number of cell layers and cell shape. (figure 6.2)

left column: simple apical surface basal surface stratified right column: squamous cell cuboidal cell columnar cell

Epithelial tissues are found ________.

lining hollow organs

Smoking impairs cilia because the toxins paralyze and can destroy the cilia. Based on this loss of function, explain which types of infections smokers would be more susceptible to.

lung infections

All connective tissue is derived from an embryonic tissue known as __________.

mesenchyme

This primary tissue type generates electrical signals and can actively contract.

muscle

Two of the four primary tissue types contain excitable cells, cells that receive stimuli and generate electrical signals. One of these is muscle tissue. Name the other.

nervous

The support cells found in nervous tissue are called ________.

neuroglia

All the following are examples of connective tissue EXCEPT __________.

neurons

Of the two major cell types found in nervous tissue, __________ cells are highly specialized to generate and conduct electrical signals.

neurons

________ are cells that make up the brain and spinal cord and transmit electrical signals from receptor to effectors.

neurons

Simple epithelia have ________.

one type of epithelial cell, arranged in a single layer

Select the tissue that is a simple epithelium.

pseudostratified

Epithelial cells are specialized to ________.

secrete, filter, and absorb

This epithelial tissue forms the kidney tubules, and the ducts and secretory portions of small glands.

simple cuboidal

This tissue can look like the hexagonal tiles of a bathroom floor. It also forms the air sacs of the lungs.

simple squamous epithelium

Which muscle tissue type is controlled voluntarily?

skeletal

Of the basic muscle types, this is the "meat" of the body, attached to the skeleton, which moves the limbs and other body parts.

skeletal muscle

This type of muscle tissue is found in the walls of hollow organs. It has no striations, and its cells are spindle shaped. It is __________.

smooth muscle

Epithelial tissues can be classified according to cell shape. __________ epithelial cells are scalelike and flattened.

squamous

This epithelial tissue has many cell layers. It forms the outer layer of the skin.

stratified squamous

Groups of cells that are anatomically similar and share a function are called __________.

tissues

Blood is a type of connective tissue.

true

Endocrine and exocrine glands are classified as epithelium because they usually develop from epithelial membranes.

true

This tissue type is capable of changing its shape and stretching. It lines the urinary bladder and ureters.

transitional epithelium

Match these prefixes to their meanings.

The prefix FIBRO- means fiber or fibrous. The prefix STRAT- means layers. The prefix RET- means made like a net or web. The prefix MES- means middle or intermediate. The prefix CHONDR- means cartilage.

When cardiac muscle tissue dies in adults, it is replaced with scar tissue composed of dense connective tissue. Explain how scar tissue would affect the function of the cardiac muscle tissue.

the scar tissue cannot contract so the heart will be weaker

What is not true of epithelial cells?

they are richly vascularized