Histology Final Prep questions I
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- Where do you find villi?
- Small intestine
- Does a peripheral nerve contain nerve cell bodies?
- NO
- The presence of intercalated disks is a distinguishing characteristic of:
- Cardiac Muscle
- Plicae circularis are found? Contain? increase what?
- in small intestine, contain many villi, increase surface area
- What do chief cells secrete?
- pepsinogen
- Germinal centers are sites of:
- B cell proliferation and differentiation in response to antigen stim
-
The schwann cell is responsible for myelin production where?
- Peripheral nervous system
- Enteroendocrine cells are a diverse population of ________ producing cells.
- Hormone
- What part of the GUT is involved in the absorption of Water?
- Large intestine
- In the bone marrow, megakaryocytes produce:
- Platelets
- How do osteocytes in osteons communicate?
-
Gap JXN in canaliculi
- What type of collagen would you expect to find in the submucosa of the LARGE intestine?
- Type IV and Laminin
- In bones, the difference between endosteum and periosteum is:
- Endosteum is a thinner and more delicate connective tissue that the periosteum
- In the spleen, lymphocytes are concentrated around the central arteries in which pulp?
- White
- What cells stimulate the vascular SM cells to contract?
- Endothelial cells
- The esophagus contains:
-
well developed prominent muscularis mucosa
stratified squamous epithelium
muscularis externa with smooth or skeletal muscle - What cells have rounded heterochromatic nucleus and very little cytoplasm?
- T-lymphocytes
- Enteroendocrine cells are found:
- Stomach
- Schwann cells produce
- Myelin
- What part of the gut has permanent plicae circulares in wall?
- Small intestine (Mainly the Jejunum)
- Where are the columnar epithelial cells of the Gut produced?
-
Only in the Crypts of Lieberkuhn.
- What do enteroendocrine cells secrete?
- Gastrin
- Where is transitional epithelium found?
- Urinary system
- What region of the GUT contains more goblet cells per unit area?
- The LARGE INTESTINE
- Elastin is found where?
-
aurical cartilage
tunica adventitia of large veins
omentum
epiglottis
There are more - What do brunners glands secrete?
- Bicarbonate
- Which layer of the skin contains dividing cells?
- Stratum Germinativum
- What cells contain granules filled with heparin and histamine?
- Mast cells- basophils
- Osteoid is different from cartilage matrix because:
- Type II Collagen is found in cartilage as a resistance to pressure
- What segment of the Gut is more active in the absorption of nutrients?
- Small intestine
- Cardiac and muscle cells are both:
- Striated
- What do goblet cells secrete?
- Mucous
- A few Reticulocytes found in peripheral blood smear is good or bad?
- Within normal limits
- What layer of skin do you need to penetrate in order to see blood?
- Papillary dermis
-
A basal lamina
A: is found only under epithelium
B: is never discontinuous
C: Is responsible for limiting the spread of cancer cells - None of the above
- Elastin, fibrillin and type II collagen is found where?
-
Elastic cartilage
(External ear, epiglottis, larynx) - Where do RBC's first enter the blood?
- Blood sinuses of the bone marrow
- What is osteoid?
- Uncalcified bone matrix secreted from osteoblasts
- Regenreation of skeltal muscle occurs by?
- Mitosis of muscle satellite cells
- Which capilarries start as blind ended tubes?
- Those of the lymphatic system
- The last region of cartilage to disappear in endochondrial bone formation is:
- Epiphyseal plate
- Sarcomeres are constructed by?
- Fibroblasts
- Skeletal muscles have how many nuclei?
- MANY
- How do muscle cells exert a force on bones?
- Integrins that span the surface membrane and interact with fibrous molecules in the extracellular matrix
- Stratifed squamous epithelium is so named in spite of the fact that:
- all of the cell layers are NOT Squamous
- What do cartilage cells know that we would like to understand?
- How to create conditions that inhibit ingrowth of blood vessels
- What is fenestration?
- windows or holes
- Smooth muscle is simlar to skeletal muscle because:
-
Use myosin in contractile aparatus
Incapable of cell division
Contain T-tubules
CONTRAST: mononucleated - What type of adipose tissure is the most common form in the body?
- Unilocular
- Osteoclasts are ______nucleated cells from what precursor?
- Multinucleated from blood monocytes
- Can schwann cells surround multiple axons without producing a myelin sheath?
- Yes
- What type of muscle cells are branched with more than one nucleus?
- Cardiac muscle cells
-
OF the following, which has a direct blood supply?
hyaline cartilage, upper layers of stratified squamous, osteocytes in outer lamellae of osteons, superficial layer of Dermis, elastic cartilage - the superficial layer of the dermis
- What cells in the intima of B.V.'s are actively involved in controlling blood clotting?
-
Endothelial cells
- What is the order of lymph flow throught the sinus of a lymph node?
- Subcapsular --> Peritrabecular --> medullary
- What is the primary function of B-cells?
- Synthesis and secretion of Ig's
- What is the predominant cell type in the connective tissue proper?
- Fibroblasts