Exam 1 Flashcards
What are the locations of the merocrine glands
goblet cell, salivary glands, pancreas,
all sweat glands in children; many adultsweat glands
Merocrine secretion
cell damage?
odor?
None
None
What are some examples of the location of the Halocrine glands?
sebaceous glands, tarsal (Meibomian) glands of eyelid
Which type of gland secretes by the disintegration of its cell membrane, and in a sense becomes a secretory vesicle?
Holocrine
what are some examples of an apocrine gland?
lactating mammary glands, some adult sweat glands,ceruminous glands in external auditory canal,
ciliary (Moll’s) glands in eyelid
Apocrine gland…
cell damage?
odor?
little
yes
what is the smallest division of the gland?
Ascinus
What is sometimes attached to the mucus ascinus?
serous demilune, small caniculi attach to the lumen for secretion
What type of cell are epithelial in origin and are contractile?
Especially found where?
function…
Myoepithelial cells
Salivary and Sweat Glands; Lacrimal Glands;
Lactating Mammary Glands
assist in secretion
What do serous glands produce?
What are some examples?
shape and shape of nucleus?
Proteins
Pancreas, parotid gland, chief cells in stomach
trapezoid and round
What do mucus glands produce?
What are some examples?
shape and shape of nucleus?
mucus (glycoproteins)
Goblet cells, mucus cells in stomach, minor salivary glands in tongue and palate
nucleus is peripheral and flat
Example of a mixed gland…
Sublingual and submandibular salivary glands
Where are serous demilunes possible
a. serous
b. mucus
c. mixed
mixed gland
What regulates exocrine secretion? (3 things)
myoepithelial cells - have ANS innervation
hormones
blood supply
What does an increase in blood supply do to exocrine secretion?
an increase in blood supply will mean an increase in exocrine secretion
What are the two main components of connective tissue matrix?
Ground substance and fibers
Fibroblasts are usually derived from what type of cell?
mesenchyme cell
When will fibroblast tend to divide?
during wound healing
A fibroblast may turn into another type of cell during what fibrocartilage formation, what type of cell does it form?
chondrocyte
What three types of cells can a fibroblast become?
adipocyte, chondrocyte, osteoblast
Scar tissue is classified as what kind of tissue?
dense irregular connective tissue
What are the two functions of fibroblasts?
Which is the main function?
Structural and Defensive
Structural
What is a mature fibroblast?
fibrocyte
What is the function of fibrocytes?
What can it not do that a fibroblast can do?
make ground substance
Which type of cell appears flat?
a. fibroblast
b. fibrocyte
c. myofibroblast
d. adipocyte
Which doesn,t divide?
Which is responsible for wound healing and tooth eruption?
b.
c
Adipocytes are usually derived from what type of cell?
mesenchyme cells
plasma cells are derive from what?
B lymphocytes
What cells produce antibodies?
plasma cells
What cells contain residual bodies?
macrophages
T/F
Macrophages can divide.
True
T/F
Macrophages are derived from mesenchyme cells
F
derived from monocytes
Where do macrophages typically come from?
bone marrow
What are some examples of macrophages?
Kupffer cells, alveolar macrophages, monocytes, microgliaLangerhans cells, osteoclasts
What kind of granules do mast cells contain?
cytoplasmic
Do mast cells divide?
yes
Mast cells are derived from what?
What where they originally thought to be derived from?
bone marrow
basophils
Mast cells mediate what events?
A. Inflammation
B. Immediate Hypersensitivity Response
C. Anaphylaxis
D. Asthma – most types
What are the four primary mediators that mast cells release?
Histamine, Heparin, ECF, NCF
T/F
Heparin increases blood flow to affected area by vasodilating arteriole and small vessels
false
Histamine is the on switch
Histamine causes the contraction of any __________ __________ muscle
smooth visceral
What does ECF do?
attracts eosinophil
What are the effects of eosinophil?
- Inhibit leukotrienes
- Produce a factor that inhibits mast cell degranulation
- Phagocytize IgE-allergin complexes and mast cell granules
- Secretes histaminase
Eosinophils limit the effect of what two primary mediators?
histamine and leukotrienes
Leukotrienes amply the effect of what?
histmine
