M3: histo (comprehensive)

5 Written Questions

1. breast enlargement and nodularity evident this early
2. bridges each of 16-20 C-shaped rings of hyaline cartilage in trachea.
3. cardiac muscle fibers; inserts into cardiac skeleton (dense CT) contains subendocardium, defined by purkinje fibers. small amount of CT surrounds cardiac muscle fibers.
4. site of superficial vascular plexus, subepithelial, supplies blood to epidermis via DIFFUSION. commonly initial site of immune-associated inflamm. rxns.
5. rather than retracing path of arterial tree, travel via CT bronchopulmonary segments directly back to heart.

5 Matching Questions

1. did clear cells develop as epidermal cells?
2. wall of bronchus
3. large vein: tunica adventitia
4. mammary glands
5. colostrum

1. a thickest layer. unlike in arteries. location of longitudinal bundles of smooth muscle.
2. b HECKS NO. they are NOT attached to adjacent epidermal cells by desmosomes so they shrink w/ normal tissue fixation. 3 types: langerhans, melanocyte, merkel. last two are in BM
3. c pre-milk secreted during last month of pregnancy and 1-3 days postpartum. protein, fat, vitamins, electrolytes, IgA, T and B leuks, LAXATIVE ACTIVITY
4. d mucosa containing CPC and thin LP. sheet of smooth muscle replaces elastic sheet from trachea. this sheet of smooth muscle is incomplete in bronchi but becomes complete in bronchioles. inconspicuous submucosa, but contains some seromucous glands that drain to luminal surface. small branches of bronchial arteries found here. ill-defined, inconspicuous adventitia
5. e highly modified apocrine/merocrine SWEAT glands.

5 Multiple Choice Questions

1. proliferative activity slows, alveolar cells differentiate for secretory activity. Intralobular CT becomes infiltrated w/ plasma cells
   1. maculae adherens
   2. second half of pregnancy
   3. cardiac skeleton
   4. Weibel-Palade granules
2. flattened cells 3-5 layers thick. contains distinct KERATOHYALIN granules that often obscure nuclei. cytokeratin filaments and LAMELLAR BODIES also in here
   1. Birbeck granules
   2. stratum granulosum
   3. sebaceous glands
   4. tracheal LP
3. alveolar cells appear more active
   secretory material seen in lumina of ALVEOLI and INTRALOBULAR DUCTS. due to increased estrogen and progesterone, stimulating ductal and alveolar cells
   1. adolescent male
   2. 2nd month of pregnancy
   3. second half of menstrual cycle
   4. heart failure cells
4. endothelial cells produce factor VIII (von willebrand), stored within cytoplasmic Weibel-Palade granules prior to release. may lack internal elastic membrane
   1. arterioles: tunica intima
   2. muscular artery: tunica intima
   3. large vein: tunica media
   4. arteriovenous shunts
5. gonadal steroids, adrenal and thyroid hormones
   1. #alveoli/lung
   2. hair growth influcenced by:
   3. mammary glands
   4. 2nd month of pregnancy

5 True/False Questions

1. catagen → thin sheets of CT separating bronchopulmonary segments and through which PULMONARY VEINS travel back to hilus of lung

   True        False

2. sebaceous glands → HOLOCRINE. fatty acids, triglycerides, waxes and cholesterol. SECRETORY: basal cells - low cuboidal which are continuous with basal cells of epidermis. entire epithelium: strat cuboidal. EXCRETORY opens onto side of hair follicle or skin surface

   True        False

3. fibrous pericardium → dense CT covering the outside of parietal pericardium

   True        False

4. suspensory/Cooper's ligaments → continuous

   True        False

5. lipofuscin granules → contain von willebrand factor. in endothelial walls of arteriole tunica intima.

   True        False