a&p lab week 2- hw 6

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.

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.

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

Squamous

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

T

T or F: Blood is a type of connective tissue.

T

What is not true of epithelial cells?

They are richly vascularized.

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)

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

fibrocartilage

Epithelial tissues are found ________.

lining hollow organs

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

mesenchyme

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

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 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

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

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

transitional epithelium

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

adipose

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

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 the following are examples of connective tissue

bones ligaments tendons