BHSC 1200 midterm 1 Question and Answer
I. quandrants of abdominal pelvic cavity - Answer -separated by median line and trans
umbilical line
II. -right upper
III. -right lower
IV. -left upper
V. -left lower
VI. Regions of the abdominopelvic cavity - Answer -1.right hypochondriac region
VII. 2. right lumbar region
VIII. 3. right iliac region
IX. 4. left hypochondriac region
X. 5. left lumbar region
XI. 6. left iliac region
XII. 7. epigastric region
XIII. 8. umbilical region
XIV. 9. hypogastric region
XV. separated by
- transtubercular line- horizontal across hip bones
XVI. -subcostal- horizontal above waste
- left and right midclavicular - vertical down nipples
XVII. Function of Na/K pump - Answer -It accomplishes the transport of three Na+ to the outside
of the cell and the transport of two K+ ions to the inside. This unbalanced charge transfer
contributes to the separation of charge across the membrane. The sodium-potassium pump
is an important contributer to action potential produced by nerve cells.
XVIII. part acts as an ATPase-- enzyme that hydrolyzes ATP
XIX. receptor-mediated endocytosis - Answer -The movement of specific molecules into a cell by
the inward budding of membranous vesicles containing proteins with receptor sites specific
to the molecules being taken in; enables a cell to acquire bulk quantities of specific
substances.
XX. 6 steps--
, XXI. binding- low density lipoprotein binds to specific receptor sites plasma membrane
XXII. vesicle formation- vesicle forms around LDL inside cell
XXIII. uncoating- vesicle uncoats itself
XXIV. fusion with endosomes- uncoated vesicle fuses with endosome and LDL particles separate
from receptor
XXV. recycling of receptors to plasma membrane- receptors pinch off forming transport vesicles
to return to plasma membrane
XXVI. degradation in lysosomes- LDL combines with lysosome for it to be digested
XXVII. Microfilaments - Answer -Long, thin fibers that function in the movement and support of the
cell
XXVIII. composed of actin and myosin
XXIX. help with muscle contraction, cell division and cell locomotion
XXX. intermediate filaments - Answer -Threadlike proteins in the cell's cytoskeleton that are
roughly twice as thick as microfilaments
XXXI. stabilize position of organelles and nucleus and help attach cells to one another
XXXII. Microtubules - Answer -A hollow rod composed of tubulin proteins that makes up part of the
cytoskeleton in all eukaryotic cells and is found in cilia and flagella.
XXXIII. help determine cell shape,
XXXIV. help movement of organelles like secretory vesicles, chromosomes in cell division
XXXV. Smooth Endoplasmic Reticulum - Answer -An endomembrane system where lipids are
synthesized, calcium levels are regulated, and toxic substances are broken down.
I. quandrants of abdominal pelvic cavity - Answer -separated by median line and trans
umbilical line
II. -right upper
III. -right lower
IV. -left upper
V. -left lower
VI. Regions of the abdominopelvic cavity - Answer -1.right hypochondriac region
VII. 2. right lumbar region
VIII. 3. right iliac region
IX. 4. left hypochondriac region
X. 5. left lumbar region
XI. 6. left iliac region
XII. 7. epigastric region
XIII. 8. umbilical region
XIV. 9. hypogastric region
XV. separated by
- transtubercular line- horizontal across hip bones
XVI. -subcostal- horizontal above waste
- left and right midclavicular - vertical down nipples
XVII. Function of Na/K pump - Answer -It accomplishes the transport of three Na+ to the outside
of the cell and the transport of two K+ ions to the inside. This unbalanced charge transfer
contributes to the separation of charge across the membrane. The sodium-potassium pump
is an important contributer to action potential produced by nerve cells.
XVIII. part acts as an ATPase-- enzyme that hydrolyzes ATP
XIX. receptor-mediated endocytosis - Answer -The movement of specific molecules into a cell by
the inward budding of membranous vesicles containing proteins with receptor sites specific
to the molecules being taken in; enables a cell to acquire bulk quantities of specific
substances.
XX. 6 steps--
, XXI. binding- low density lipoprotein binds to specific receptor sites plasma membrane
XXII. vesicle formation- vesicle forms around LDL inside cell
XXIII. uncoating- vesicle uncoats itself
XXIV. fusion with endosomes- uncoated vesicle fuses with endosome and LDL particles separate
from receptor
XXV. recycling of receptors to plasma membrane- receptors pinch off forming transport vesicles
to return to plasma membrane
XXVI. degradation in lysosomes- LDL combines with lysosome for it to be digested
XXVII. Microfilaments - Answer -Long, thin fibers that function in the movement and support of the
cell
XXVIII. composed of actin and myosin
XXIX. help with muscle contraction, cell division and cell locomotion
XXX. intermediate filaments - Answer -Threadlike proteins in the cell's cytoskeleton that are
roughly twice as thick as microfilaments
XXXI. stabilize position of organelles and nucleus and help attach cells to one another
XXXII. Microtubules - Answer -A hollow rod composed of tubulin proteins that makes up part of the
cytoskeleton in all eukaryotic cells and is found in cilia and flagella.
XXXIII. help determine cell shape,
XXXIV. help movement of organelles like secretory vesicles, chromosomes in cell division
XXXV. Smooth Endoplasmic Reticulum - Answer -An endomembrane system where lipids are
synthesized, calcium levels are regulated, and toxic substances are broken down.
