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SCI 221 NIGHTINGALE COLLEGE - FINAL EXAM 2026 | BRAND
NEW ACTUAL EXAM QUESTIONS AND CORRECT SOLUTIONS |
LATEST 2026/2027 UPDATE | 100% GUARANTEED VALUE PACK.
1. To accomplish self-regulation, a highly complex and integrated
communication control system or network is required. This type
of network is called a(n) - Correct Answer-feedback control
loop.
2. Local control or _____, intrinsic mechanisms often make use of
chemical signals. - Correct Answer-autoregulation
3. The impact of effector activity on sensors may be positive or
negative. Therefore, homeostatic control mechanisms are
categorized as - Correct Answer-organs that are directly
influenced by physiological variables or mechanisms.
4. The normal reading or range is called the - Correct Answer-set
point.
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5. Processes for maintaining or restoring homeostasis are known
as - Correct Answer-homeostatic control mechanisms.
6. Homeostatic Control Mechanisms - Correct Answer-receptor,
control center, effector
7. receptor, control center, effector - Correct Answer-List the three
basic components of a feedback system.
8. What term describes a signal traveling toward a particular
center or point of reference? - Correct Answer-afferent
9. Effectors can be described as - Correct Answer-organs that
directly influence controlled physiological variables.
10. Events that lead to an immune response to an infection or the
formation of a blood clot are examples of - Correct Answer-
positive feedback
11. The concept that information may flow ahead to another
process to trigger a change in anticipation of an event that will
follow is called - Correct Answer-feed-forward.
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12. Many complex processes of the body are coordinated at many
levels. These include - Correct Answer-intracellular, intrinsic
and extrinsic
13. The body naturally changes some set points to different values
at different times of the day. These daily cyles are called -
Correct Answer-circadian cycles.
14. Because negative feedback control systems oppose changes
that are opposite in direction to the initial disturbance, they are -
Correct Answer-slowed or maintained in the homeostatic range.
15. Of the 11 major body systems, which is the least involved in
maintaining homeostasis? - Correct Answer-Reproductive
16. If the secretion of oxytocin during childbirth operated as a
negative-feedback control loop, what effect would it have on
uterine contractions? - Correct Answer-Oxytocin would inhibit
uterine contractions.
17. Which of the following is not one of the basic components in a
feedback control loop? - Correct Answer-Transmitter
SCI 221 NIGHTINGALE COLLEGE - FINAL EXAM 2026 | BRAND
NEW ACTUAL EXAM QUESTIONS AND CORRECT SOLUTIONS |
LATEST 2026/2027 UPDATE | 100% GUARANTEED VALUE PACK.
1. To accomplish self-regulation, a highly complex and integrated
communication control system or network is required. This type
of network is called a(n) - Correct Answer-feedback control
loop.
2. Local control or _____, intrinsic mechanisms often make use of
chemical signals. - Correct Answer-autoregulation
3. The impact of effector activity on sensors may be positive or
negative. Therefore, homeostatic control mechanisms are
categorized as - Correct Answer-organs that are directly
influenced by physiological variables or mechanisms.
4. The normal reading or range is called the - Correct Answer-set
point.
, Page|2
5. Processes for maintaining or restoring homeostasis are known
as - Correct Answer-homeostatic control mechanisms.
6. Homeostatic Control Mechanisms - Correct Answer-receptor,
control center, effector
7. receptor, control center, effector - Correct Answer-List the three
basic components of a feedback system.
8. What term describes a signal traveling toward a particular
center or point of reference? - Correct Answer-afferent
9. Effectors can be described as - Correct Answer-organs that
directly influence controlled physiological variables.
10. Events that lead to an immune response to an infection or the
formation of a blood clot are examples of - Correct Answer-
positive feedback
11. The concept that information may flow ahead to another
process to trigger a change in anticipation of an event that will
follow is called - Correct Answer-feed-forward.
, Page|3
12. Many complex processes of the body are coordinated at many
levels. These include - Correct Answer-intracellular, intrinsic
and extrinsic
13. The body naturally changes some set points to different values
at different times of the day. These daily cyles are called -
Correct Answer-circadian cycles.
14. Because negative feedback control systems oppose changes
that are opposite in direction to the initial disturbance, they are -
Correct Answer-slowed or maintained in the homeostatic range.
15. Of the 11 major body systems, which is the least involved in
maintaining homeostasis? - Correct Answer-Reproductive
16. If the secretion of oxytocin during childbirth operated as a
negative-feedback control loop, what effect would it have on
uterine contractions? - Correct Answer-Oxytocin would inhibit
uterine contractions.
17. Which of the following is not one of the basic components in a
feedback control loop? - Correct Answer-Transmitter
