Feedback Mechanism

Question 1

is a physiological regulatory system that either returns the body to a normal internal state (homeostasis) or, less commonly, brings an internal system further away from homeostasis, like having fever.

Answer 1

Feedback mechanism

Question 2

Feedback is used to make a response stronger until it reaches a set point. Examples of processes controlled by positive feedback in the human body include blood clotting and childbirth.

Answer 2

Positive Feedback Mechanism

Question 3

Feedback is used to make an excessive response weaker until it reaches a set point. Body temperature regulation and blood glucose management are two examples of systems that are regulated by negative feedback.

Answer 3

Negative Feedback Mechanism

Question 4

Parts of Feedback System

Answer 4

Receptor, Control Center, Effector

Question 5

(or sensor) receives information and sends this to the control center.

Answer 5

Receptor

Question 6

(or evaluator) processes receptor information and stimulates the effector.

Answer 6

Control Center

Question 7

carries out a stimulatory or inhibitory effect according to control center instructions.

Answer 7

Effector

Question 8

Signals can be sent via ____________(action potentials and neurotransmitters) or via ________________(most commonly, hormones).

Answer 8

nerve pathways, chemical signals

Question 9

refers to the stable state of the inner environment of organisms.

Answer 9

Homeostasis

Question 10

Regulations in the body.

Answer 10

Thermoregulation
Blood Glucose Level
Blood clotting/Presence of Wound
Childbirth
Digestion
Etc.

Question 11

Stable conditions are continuously maintained in the human body via _____________

Answer 11

homeostatic systems.

Question 12

could lead to harmful wastes building up in the body or cells not receiving all the nutrients they require.

Answer 12

homeostatic imbalance

Question 13

The human body’s temperature regulatory center is the ____________________ in the brain.

Answer 13

hypothalamus

Question 14

Blood vessels in the skin _______________ to allow more blood from the warm body core to flow close to the surface of the body, so heat can be radiated into the environment.

Answer 14

dilate (vasodilation)

Question 15

As blood flow to the skin increases, sweat glands in the skin are activated to _______________________

Answer 15

increase their output of sweat (diaphoresis)

Question 16

Blood vessels in the skin ___________________ to prevent blood from flowing close to the surface of the body. This reduces heat loss from the surface.

Answer 16

contract (vasoconstriction)

Question 17

Plant Regulations