glands (epithelial tissue II)

Question 1

what is a gland?

Answer 1

organs composed of epithelia that synthesize and secrete specialized products

Question 2

what do glands secrete? (3)

Answer 2

1. proteins, enzymes –> pancreas
2. lipis, hormones–> adrenal gland
3. complex of carbs and protein–> salivary glands

Question 3

sereous

Answer 3

watery - contains a protein enxyme, peptides

Question 4

sebaceous

Answer 4

oil

Question 5

what are the two types of glands?

Answer 5

endocrine and exocrine

Question 6

what are exocrine glands?

Answer 6

epithelial in origin
lost connection to ducts
secrete into blood stream either directly or through interstial space

Question 7

general components of exocrine glands (3)

Answer 7

acinus- secretoruy portion
duct- conducting portion
secretory vesicles

Question 8

3 types of structures of exocrine glands

Answer 8

1. tubular
2. acinar
3. alveolar

Question 9

simple tubular (simple gland)

Answer 9

elongated secretory portion; duct usually short or abscent

Question 10

branched tubular (simple gland)

Answer 10

several long secretory parts joining to drain into 1 duct

Question 11

coiled tubular (simple gland)

Answer 11

secretory portion is very long and coiled

Question 12

acinar (simple gland)

Answer 12

rounded, sack-like secretory portion

Question 13

branched acinar (simple gland)

Answer 13

multiple sacile secretory parts entering the same duct

Question 14

tubular (compound gland)

Answer 14

several elongated, coiled secretory units and their ducts converge to form larger ducts

Question 15

acinar (compound gland)

Answer 15

several saclike secretory units with small ducts coverage at a larger duct

Question 16

tubuloacinar

Answer 16

ducts of both tubular and acinar secretory units converge at larger ducts

Question 17

3 mechanisms of exocrine gland secretion

Answer 17

1. merocrine gland
2. holocrine gland
3. aprocine gland

Question 18

merocrine gland

Answer 18

exocytosis
Most common type of secretion
Salivary glands

Question 19

holocrine gland

Answer 19

Surrounded by connective tissue→ fixes the space, cannot expand the box→ squished as more cells are produced
Mature cells release contents by bursting
Sebaceous glands

Question 20

apocrine glands

Answer 20

Release contents by blebbing off apical region
Mammary glands

Question 21

mucous cells

Answer 21

type of material secreted