CHAPTER 4: Tissues

Question 1

4 types of tissues and major function

Answer 1

1. epithelial - lines body cavities and glands
2. connective - for binding and support
3. muscular - for movement
4. nervous - for communication

Question 2

2 criteria to classify epithelial tissue

Answer 2

1. number of cell layers
2. cell shape

Question 3

2 ways epithelia and connective tissues are different

Answer 3

epithelial is avascular and does not contain nerve supplies

Question 4

3 surfaces of epithelial tissue (top to bottom)

Answer 4

1. apical
2. lateral
3. basal

Question 5

2 categories of glands

Answer 5

1. endocrine - no ducts, secrete hormones directly into fluid or blood
2. exocrine - have ducts, secrete products into ducts

Question 6

4 components of blood

Answer 6

1. plasma
2. erythrocytes (red blood cells)
3. leukocytes (white blood cells)
4. platelets (fragments for clotting)

Question 7

blood and lymph connective

Answer 7

fluid; transports respiratory gases, nutrients, wastes, hormones, and governs immune response; in heart and blood vessels

Question 8

what type of tissues in body membranes?

Answer 8

epithelial and connective tissues

Question 9

3 types of muscle tissue

Answer 9

1. skeletal - striated fibers; voluntary control; attaches to bone or skin
2. cardiac - striated; cells attached at intercalated discs; contraction moves blood; in heart
3. smooth - not striated; involuntary movement of food, blood, urine; in stomach, intestines, urinary bladder

Question 10

2 types of cells in nervous tissue

Answer 10

1. neurons - nerve cells
2. glial - support and protect neurons
   *found in brain, spinal cord, and nerves