NU551 FINAL REVIEW | QUESTIONS AND ANSWERS |
2026 UPDATE | RATED 100% CORRECT.
Histone Function Answer - Organize and package DNA into nucleosomes in
chromatin.
Common misconception about histones Answer - Histones are involved in cell
movement or division.
DNA compaction Answer - Essential for mitosis, but histones do not drive the
division process.
Mediator triggering fever after bacterial infection Answer - Interleukin-1.
Interleukin-1 action Answer - Acts on the hypothalamus to raise the body's
temperature set point.
Purulent Exudate Answer - Rich in neutrophils and dead cells, indicates
bacterial infection.
Serous Exudate Answer - Watery, low protein content, example: fluid in
blisters.
Fibrous Exudate Answer - Contains large amounts of fibrinogen, seen in severe
inflammation, often in body cavities.
, Hemorrhagic Exudate Answer - Contains red blood cells, indicates bleeding,
seen in severe tissue injury.
Reticular Activating System Answer - Network in the brainstem regulating
wakefulness and consciousness.
Damage to Reticular Activating System Answer - Can result in coma.
Astrocytes Answer - Glial cells supporting the blood-brain barrier.
Astrocytes function Answer - Provide nutrients and maintain extracellular ion
balance in the CNS.
Excitatory Postsynaptic Potentials (EPSPs) Answer - Depolarizing signals
bringing membrane potential closer to threshold.
EPSPs effect Answer - Increase likelihood of action potential generation.
Neurons Regeneration Answer - Peripheral neurons (PNS) can regenerate if the
myelin sheath remains intact.
Water-Soluble Hormone Answer - Epinephrine acts quickly through surface
receptors.
Insulin Function Answer - Promotes glucose uptake in muscle cells.
2026 UPDATE | RATED 100% CORRECT.
Histone Function Answer - Organize and package DNA into nucleosomes in
chromatin.
Common misconception about histones Answer - Histones are involved in cell
movement or division.
DNA compaction Answer - Essential for mitosis, but histones do not drive the
division process.
Mediator triggering fever after bacterial infection Answer - Interleukin-1.
Interleukin-1 action Answer - Acts on the hypothalamus to raise the body's
temperature set point.
Purulent Exudate Answer - Rich in neutrophils and dead cells, indicates
bacterial infection.
Serous Exudate Answer - Watery, low protein content, example: fluid in
blisters.
Fibrous Exudate Answer - Contains large amounts of fibrinogen, seen in severe
inflammation, often in body cavities.
, Hemorrhagic Exudate Answer - Contains red blood cells, indicates bleeding,
seen in severe tissue injury.
Reticular Activating System Answer - Network in the brainstem regulating
wakefulness and consciousness.
Damage to Reticular Activating System Answer - Can result in coma.
Astrocytes Answer - Glial cells supporting the blood-brain barrier.
Astrocytes function Answer - Provide nutrients and maintain extracellular ion
balance in the CNS.
Excitatory Postsynaptic Potentials (EPSPs) Answer - Depolarizing signals
bringing membrane potential closer to threshold.
EPSPs effect Answer - Increase likelihood of action potential generation.
Neurons Regeneration Answer - Peripheral neurons (PNS) can regenerate if the
myelin sheath remains intact.
Water-Soluble Hormone Answer - Epinephrine acts quickly through surface
receptors.
Insulin Function Answer - Promotes glucose uptake in muscle cells.
