HOMEOSTASIS LAB - SOPHIA LEARNING
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ parasympathetic nervous system.
Answer: the division of the autonomic nervous system that calms the body,
conserving its energy
◍ What is the primary function of cardiac muscle?.
Answer: To pump blood.
◍ ___% of human water content is found in extracellular fluid.
Answer: 35
◍ independent variable.
Answer: The experimental factor that is manipulated; the variable whose
effect is being studied.
◍ examples of parasympathetic activation.
Answer: constricts pupil, stimulates saliva production, constricts bronchi,
slows heart, stimulates digestive organs, stimulates urination, promotes
erection of genitals
◍ experimental experiment.
Answer: - Treatment vs. Non-treatment- Groups (experimental and control)
◍ efferent neruons.
Answer: Nerve cells which carry impulses away from the central nervous
system to parts of the body
◍ What is the function of muscle tissue?.
Answer: Specialized for contraction that leads to movement.
◍ why does physical activity cause an increase in breathing rate.
, Answer: physical activity causes an increase oxygen uptake to complete
aerobic respiration. Aerobic respiration creates CO2 as a byproduct causing
it to build up and you to have a higher level in your body. Using muscles
also creates CO2 waste in the blood. In order to get rid of CO2 and maintain
a set point, your body increases the rate of breathing and you take deeper
breaths. This causes more CO2 exhaled, maintaining a set point.
◍ negative feedback for blood CO2 below set point.
Answer: blood co2 below set point --> slower rate of breathing/ shallower
breaths --> less CO2 inhaled --> blood co2 levels increase to set point
◍ autonomic nervous system.
Answer: A subdivision of the peripheral nervous system. Controls
involuntary activity of visceral muscles and internal organs and glands.
◍ intraindividual variability.
Answer: variability of measurements within the same individual
◍ dependent variable.
Answer: The outcome factor; the variable that may change in response to
manipulations of the independent variable.
◍ What is the first step in how the Physio Lab works?.
Answer: A mini lecture on lab content.
◍ What are the two main types of glands in glandular epithelium?.
Answer: Endocrine glands and exocrine glands.
◍ surface tension.
Answer: ability of water to hold its shape
◍ How is epithelial tissue classified?.
Answer: According to shape and number of layers.
◍ bonds within a water molecule.
Answer: polar covalent bonds
◍ What is a negative feedback mechanism?.
Answer: A response mechanism that maintains homeostasis by
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ parasympathetic nervous system.
Answer: the division of the autonomic nervous system that calms the body,
conserving its energy
◍ What is the primary function of cardiac muscle?.
Answer: To pump blood.
◍ ___% of human water content is found in extracellular fluid.
Answer: 35
◍ independent variable.
Answer: The experimental factor that is manipulated; the variable whose
effect is being studied.
◍ examples of parasympathetic activation.
Answer: constricts pupil, stimulates saliva production, constricts bronchi,
slows heart, stimulates digestive organs, stimulates urination, promotes
erection of genitals
◍ experimental experiment.
Answer: - Treatment vs. Non-treatment- Groups (experimental and control)
◍ efferent neruons.
Answer: Nerve cells which carry impulses away from the central nervous
system to parts of the body
◍ What is the function of muscle tissue?.
Answer: Specialized for contraction that leads to movement.
◍ why does physical activity cause an increase in breathing rate.
, Answer: physical activity causes an increase oxygen uptake to complete
aerobic respiration. Aerobic respiration creates CO2 as a byproduct causing
it to build up and you to have a higher level in your body. Using muscles
also creates CO2 waste in the blood. In order to get rid of CO2 and maintain
a set point, your body increases the rate of breathing and you take deeper
breaths. This causes more CO2 exhaled, maintaining a set point.
◍ negative feedback for blood CO2 below set point.
Answer: blood co2 below set point --> slower rate of breathing/ shallower
breaths --> less CO2 inhaled --> blood co2 levels increase to set point
◍ autonomic nervous system.
Answer: A subdivision of the peripheral nervous system. Controls
involuntary activity of visceral muscles and internal organs and glands.
◍ intraindividual variability.
Answer: variability of measurements within the same individual
◍ dependent variable.
Answer: The outcome factor; the variable that may change in response to
manipulations of the independent variable.
◍ What is the first step in how the Physio Lab works?.
Answer: A mini lecture on lab content.
◍ What are the two main types of glands in glandular epithelium?.
Answer: Endocrine glands and exocrine glands.
◍ surface tension.
Answer: ability of water to hold its shape
◍ How is epithelial tissue classified?.
Answer: According to shape and number of layers.
◍ bonds within a water molecule.
Answer: polar covalent bonds
◍ What is a negative feedback mechanism?.
Answer: A response mechanism that maintains homeostasis by
