Exam 1 (4&5)

Question 1

Four Major Tissue Types and General Function and Characteristics

Answer 1

connective tissue, epithelial tissue, muscle tissue, and nervous tissue.

Question 2

o How are cells arranged combined together? Basement Membrane, Tight Junctions (leak
proofing), Desmosomes & Hemidesmosomes (binding together), Gap Junctions
(communication and transfer of cell contents).

Answer 2

Adherens junctions and desmosomes hold cells together

Question 3

o What are villi and microvilli and where do you find them? What do ciliated cells do?

Answer 3

found in the small intestine and help with the absorption of nutrients from food.
ciliated cells: provides the propelling force for the transport of mucus along the airways

Question 4

o You should at this point have an idea of where each specific tissue type is found in body
and why the specialized structures of the cell will be of benefit?

Question 5

o Know your glands (exocrine vs endocrine), Excretory (Exocrine secretion = merocrine,
apocrine, holocrine. What are differences?)

Answer 5

exocrine glands secrete substances into a ductal system to an epithelial surface, whereas endocrine glands secrete products directly into the bloodstream
Apocrine: mom milk
Holocrine: erupting cell membrane

Question 6

o Components of connective tissues? 1) Cells (what types), and 2) extracellular matrix =
fibers & ground substance.

Answer 6

Cells
Connective tissue can contain stationary and migrating cells, such as fibroblasts and fat cells.
Fibers
Connective tissue can contain collagen and elastin fiber. loose and extensible, denser and more protective.
Ground substance

Question 7

o Major types of connective tissue and where they are found: What are their functions in the body and
what specific tissues do they make up

Answer 7

(areolar: nipple, elastic pulling pain
adipose: fat thermal
reticular: brainstem nuclei and neurons. brainstem cover
Dense dense regular: tightly packed bundles of collagen fibres
irregular: collagen fibers that are arranged in different directions reticular dermis- bottom layer of dermis
(hyaline: the type that makes up the embryonic skeleton.- joints
fibrocartilage: tough structural support to the body-musculoskeletal
elastic cartilage: most flexible- ear