Flashcards
CB&H Exam 2.2
Cards in this deck (25)
- 1—Cardiac Muscle
- can tell by the centrally placed nuclei
- 2—Cardiac Muscle
- can see the myofibrils
- can see the centrally placed nucleus
- arrow points to intercalated disc (specific to cardiac muscle; couple cells "ionically" to coordinate beating)
- 3—Cardiac Muscle
- Arrow points to branch in cardiac muscle
- identifiable by centrally placed nucleus, myofibrils, space between cells
- 4—Cardiac Muscle
- arrow pointing to striations due to myofibrils
- note: spacing between myofibrils often due to presence of mitochondria
- 5—Arrow points to capillary in cardiac muscle
- note: cardiac muscle has an extensive capillary network; also branching fibers; centrally located nucleus and ordered striated appearance
- 6—Hyaline cartilage
- matrix appears glassy (because contains collagen type II which does not form large fibers)
- most common type of cartilage (can be found in respiratory tract)
- 7—Hyaline Cartilage
- yellow arrows point to chondrocytes
- isogenous groups are clusters of chondrocytes that occupy a single lacuna or lacunae close together (arise from a sngle precursor chondrocyte); more common in rapidly growing cartilage
- 8—Territorial matrix - has the highest concentration of proteoglycans (stains darker when preserved); close to lacuna
Interterritorial matrix - lower proteoglycan content; further from lacuna
*note: if proteoglycans lost during fixation will not be able to distinguish the two
- 9—Cross section of cardiac muscle
- centrally placed nucleus; granular cytoplasm due to cs of myofibrils
- 10—Intramembraneous ossification
Sp - spicules
M - mesenchyme
in time the spicules will grow together to form trabeculae and this will be spongy bone with marrow filling space
- 11—Intramembranous ossification
- this is woven bone (osteocyte lacunae are plump and randomly distributed)
- blue arrows - osteoblasts
- yellow arrows - osteoclasts
- 12—Blue arrows are motor neurons in ventral horn of spinal cord
- they innervate skeletal muscle
- 13—Motor neuron (in ventral horn of spinal cord - gray matter; innervates skeletal muscle)
- green arrow is an axon hillock (note: it lacks nissil bodies)
blue arrow - nucleolus
yellow arrows - nissil bodies
- 14—Motor neuron
- blue arrows are dendrites (contain nissil bodies in processes coming from periakyron; unlike axon hillocks that have no nissil bodies in that area)
- 15—Slide of Gray Matter
- yellow arrows - small motor neurons
- green arrow - large alpha motor neuron
- blue arrows - glial cells
- 16—Pituitary body - hypophysis
pars nervosa - within adenohypophysis (anterior pituitary)
pars distalis and pars intermedia are within neurohypophysis (posterior pituitary
- 17—From within the adenohypophysis (anterior pituitary)
- 2 cell types: chromophobes (cytoplasm stains poorly) and chromophils (includes acidophils and basophils - depending on staining affinity of secretory granules)
acidophils - somatotrophs (produce somatotropin/GH) and mammotrophs (produce Prolactin)
basophils - gonadotrophs (produce FSH and LH), thyrotrophs (produce TSH), and corticotrophs (produce POMC derivatives such as ACTH, lipotropins, endorphins and MSH)
- 18—sinusoids (vessels of secondary plexus of portal system) in anterior pituitary (adenohypophysis)
- derived from hypophyseal arteries
- portal system because goes through 2+ separate capillary beds before returning to the heart
- this is a venous portal system because it is connected by veins
- 19—asterisk - Rathke's cyst in pars intermedia of hypophysis - these are remnants of Rathke's pouch (an embryonic structure formed by invagination of oral ectoderm)
these cysts are filled with colloid
- note pars intermedia is rich in basophils
- 20—Slide of neurohypophysis - more fibrous than adenohypophysis
yellow arrows - axons of hypothalamic neurons (so cell bodies in hypothalamus) - form the hypothalamo-hypophyseal tract - extends into pars nervosa
- blue arrow - endothelial cell nuclei lining blood vessels
*note : nuclei in pars nervosa belong to pituicytes (analogous to glia)
- 21—This slide is in the neurohypophysis (posterior pituitary - can tell because less cellular)
arrows - herring bodies - groups of secretary granules - contain oxytocin and antidiuretic hormone (ADH) as well as neurophysins (all produced by hypothalamic neurons) - these hormones travel down axons and are secreted into capillaries in the pars nervosa
- 22—Slide of the muscularis external of the colon - smooth muscle
asterisk - myenteric plexus ( innervation by autonomic ganglia)
- 23—Nissil Body
- 24—Outline is developing mandible or maxilla
- 25—Intermembranous ossification in a developing tooth
- osteoid is blue colored (because this is trichrome stain)
- bone is staining red
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- Final Cell Biology and Histology Flashcards on CB&H Exam 2.2, created by Ashley Harvard on 08/10/2015.
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- Ashley Harvard
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