HOMEOSTASIS LAB - SOPHIA LEARNING
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Afferent Pathway.
Answer: Sensory information that travels from a sensor or receptor to the
control center
◍ Role of thermoreceptors in skin in maintaining homeostasis during heat
stress?.
Answer: send messages through afferent sensory pathways to the posterior
hypothalamus
◍ Role of posterior hypothalamus in maintaining homeostasis during heat
stress?.
Answer: send messages via the efferent autonomic pathways to the sweat
glands and smooth muscle arterioles.
◍ Shark Osmosis.
Answer: The water molecules are like hungry sharks and any chemical
(molecule) that is dissolved in the water is their food. On the left side there
is not much 'food' so the sharks will swim to the other side.
◍ Fluid Mosaic Model.
Answer: The fluid mosaic model describes the cell membrane as a tapestry
of several types of molecules (phospholipids, cholesterols, and proteins) that
are constantly moving. This movement helps the cell membrane maintain its
role as a barrier between the inside and outside of the cell environments.
◍ What kind of system should the antagonistic effectors be a part of if trying
to obtain more efficient homeostatic control?.
Answer: if two sensors and two effectors are antagonistic to each other
, ◍ What occurs when BSL is low?.
Answer: Glucagon is released from the alpha cells of pancreas, which leads
to glycogen breakdown in the liver cells, releasing glucose into the blood
◍ Negative Feedback Loops.
Answer: 1. Pathwaya. Sensors in the body to detect change and send
information to the:b. Integrating center, which assesses change around a set
point. The integrating center then sends instructions to an:c. Effector, which
can make the appropriate adjustments to counter the change from the
set-point
◍ Sweat glands and smooth muscle arterioles are.
Answer: thermoregulatory effectors
◍ Heat Exhaustion.
Answer: occurs when strenuous exercise or high environmental temps cause
the body's homeostatic mechanisms to be overtaxed.
◍ Oxytocin.
Answer: a pituitary gland hormone that triggers uterine muscle contraction.
◍ Sensors.
Answer: receptors that are capable of responding to the variable and
determine the response
◍ Effectors.
Answer: structures that make a change in the variable
◍ Spectrophotometry.
Answer: -A technique that allows the determination of a solute
concentration in a solution.-Beer’s Law: the concentration of a solute in
solution is directly proportional to the amount of light absorbed by that
solution.-A spectrophotometer measures the light absorbance of a
solution.-Concentration of a solute (in plasma) can be determined by
comparing its absorbance to that of several standard solutions.
◍ Rate of filtration is related to the:.
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Afferent Pathway.
Answer: Sensory information that travels from a sensor or receptor to the
control center
◍ Role of thermoreceptors in skin in maintaining homeostasis during heat
stress?.
Answer: send messages through afferent sensory pathways to the posterior
hypothalamus
◍ Role of posterior hypothalamus in maintaining homeostasis during heat
stress?.
Answer: send messages via the efferent autonomic pathways to the sweat
glands and smooth muscle arterioles.
◍ Shark Osmosis.
Answer: The water molecules are like hungry sharks and any chemical
(molecule) that is dissolved in the water is their food. On the left side there
is not much 'food' so the sharks will swim to the other side.
◍ Fluid Mosaic Model.
Answer: The fluid mosaic model describes the cell membrane as a tapestry
of several types of molecules (phospholipids, cholesterols, and proteins) that
are constantly moving. This movement helps the cell membrane maintain its
role as a barrier between the inside and outside of the cell environments.
◍ What kind of system should the antagonistic effectors be a part of if trying
to obtain more efficient homeostatic control?.
Answer: if two sensors and two effectors are antagonistic to each other
, ◍ What occurs when BSL is low?.
Answer: Glucagon is released from the alpha cells of pancreas, which leads
to glycogen breakdown in the liver cells, releasing glucose into the blood
◍ Negative Feedback Loops.
Answer: 1. Pathwaya. Sensors in the body to detect change and send
information to the:b. Integrating center, which assesses change around a set
point. The integrating center then sends instructions to an:c. Effector, which
can make the appropriate adjustments to counter the change from the
set-point
◍ Sweat glands and smooth muscle arterioles are.
Answer: thermoregulatory effectors
◍ Heat Exhaustion.
Answer: occurs when strenuous exercise or high environmental temps cause
the body's homeostatic mechanisms to be overtaxed.
◍ Oxytocin.
Answer: a pituitary gland hormone that triggers uterine muscle contraction.
◍ Sensors.
Answer: receptors that are capable of responding to the variable and
determine the response
◍ Effectors.
Answer: structures that make a change in the variable
◍ Spectrophotometry.
Answer: -A technique that allows the determination of a solute
concentration in a solution.-Beer’s Law: the concentration of a solute in
solution is directly proportional to the amount of light absorbed by that
solution.-A spectrophotometer measures the light absorbance of a
solution.-Concentration of a solute (in plasma) can be determined by
comparing its absorbance to that of several standard solutions.
◍ Rate of filtration is related to the:.
