HOMEOSTASIS

Question 1

Anatomy

Answer 1

Scientific discipline that investigates the body’s structure.

Question 2

Physiology

Answer 2

Scientific investigation of the processes or functions of living things.

Question 3

Chemical Level

Answer 3

Interaction of atoms

Question 4

Cell Level

Answer 4

Structural and functional unit of living organisms

Question 5

Tissue Level

Answer 5

Group of similar cells and the materials surrounding them

Question 6

Organ Level

Answer 6

One or more tissues functioning together

Question 7

Organ System Level

Answer 7

Group of organs functioning together

Question 8

Organism Level

Answer 8

Any living thing

Question 9

List the Organs of the Body

Answer 9

Brain
Spinal Cord
Carotid artery
Larynx
Esophagus
Aortic arch
Lung
Heart
Diaphragm
Liver
Spleen
Stomach
Pancreas
Gallbladder
Kidney
Small intestine
Large intestine
Ureter
Urinary bladder
Urethra

Question 10

List the Organ Systems of the Body

Answer 10

Integumentary system
Skeletal system
Muscular system
Lymphatic system
Respiratory system
Digestive system
Nervous system
Endocrine system
Cardiovascular system
Urinary system
Female Reproductive system
Male Reproductive system

Question 11

Homeostasis

Answer 11

Maintenance of a stable internal environment by physiological mechanisms, both extracellular and intracellular environments

Question 12

Equilibrium

Answer 12

Opposing forces are balanced and there is no net transfer of matter or energy from one compartment to another; time is a factor and no energy is required to maintain

Question 13

Steady state

Answer 13

Condition that does not change with time; may require energy to maintain

Question 14

Types of Feedback system

Answer 14

Negative and Positive

Question 15

Receptor

Answer 15

Monitors the value of some variable

Question 16

Control center

Answer 16

Establishes the set point

Question 17

Effector

Answer 17

Can change the value of the variable

Question 18

Stimulus

Answer 18

Deviation from the set point; detected by the receptor

Question 19

Response

Answer 19

Produced by the effector

Question 20

When is feedforward control used?

Answer 20

When a change with time is needed

Question 21

Negative Feedback

Answer 21

Any deviation from the set point is made smaller (resisted)

Question 22

Example of Negative Feedback

Answer 22

Regulation of blood pressure

Question 23

Positive Feedback

Answer 23

When a deviation occurs, the response is to make the deviation greater

Question 24

Example of Normal Positive feedback

Answer 24

Childbirth

Question 25

Example of Harmful Positive feedback

Answer 25

After hemorrhage, blood pressure drops and the heart’s ability to pump decreases