Exam 2: Histology

What is the definition of a tissue

• Groups of similar cells which work together toward a specific function

• Groups of similar tissues which work together toward a specific function

• Groups of similar atoms which work together toward a specific function

• Groups of similar organs which work together toward a specific function

Tags

NGSS.HS-LS1-2

What are the general function(s) of epithelium

• Movement

• Regulates and controls body functions

• Protection, absorption, filtration, excretion, secretion, and sensory reception

• Transport

What does polarity mean when it comes to special characteristics of epithelium

• Epithelial tissues need to fit closely together

• 2 distinct ends of the tissue (apical and basal surface)

• All epithelial sheets are supported by connective tissue

• No blood vessels are found in epithelial tissue

What does regeneration mean when it comes to special characteristics of epithelium

• Epithelial cells have high regenerative capacities

• Avascular, but innervated

• All epithelial sheets are supported by connective tissue

• Epithelial tissues need to fit closely together

Tags

NGSS.HS-LS1-4

How do you name epithelia

• 1st shape of cell, 2nd # of layers

• 1st # of layers, 2nd shape of cell

• 1st # of cells, 2nd shape of cell

• 1st shape of cell, 2nd # of cells

What is the function of simple squamous epithelium

• secretion and absorption

• secretion, particularly of mucus, and also in movement of mucus via ciliary sweeping action

• absorption and secretion of mucus, enzymes, and other substances

• rapid diffusion and sometimes filtration

What is the function of simple cuboidal epithelium

• secretion and absorption

• absorption and secretion of mucus, enzymes, and other substances

• secretion, particularly of mucus, and also in movement of mucus via ciliary sweeping action

• absorption and some filtration

What is the function of simple columnar epithelium

• secretion, particularly of mucus, and also in movement of mucus via ciliary sweeping action

• secretion and filtration

• absorption and secretion of mucus, enzymes, and other substances

• secretion and absorption

What is the function of stratified epithelium

• secretion and filtration

• secretion, particularly of mucus, and also in movement of mucus via ciliary sweeping action

• protection

• secretion and absorption

What is mesothelium

• lining of lymphatic vessels, blood vessels, and heart (lining vessels)

• in the jejunum

• serous membranes in the ventral body cavity (abdominopelvic cavity and thoracic cavity)

• in mammary glands