L3- Homeostasis

Question 1

equilibrium or health of the body as measured by established norms of blood pressure, heart rate, temperature, respiratory rate, and other indicators

Answer 1

homeostasis

Question 2

-when any deviation from the set point made smaller or is resisted
-maintains variation within a normal range

Answer 2

negative feedback

Question 3

the physiological value around which normal range fluctuates

Answer 3

set point

Question 4

restricted set of values that is optimally healthful and stable

Answer 4

normal range

Question 5

three components of negative feedback

Answer 5

1. receptor
2. control center
3. effector

Question 6

monitors the value of a variable, such as body temperature, by detecting stimulus (changes in environment)

Answer 6

receptor

Question 7

what are receptors

Answer 7

nerves that send messages to the brain

Question 8

determines the set point for the variable and receives input from the receptor about the variable

Answer 8

control center

Question 9

what is the control center

Answer 9

brain (analyzes the message sent by the receptors)

Question 10

can change the value of the variable when directed by the control center

Answer 10

effector (ex. sweat)

Question 11

occurs when the initial stimulus further stimulates the response

Answer 11

positive feedback

Question 12

examples of positive feedback

Answer 12

pregnancy and blood clotting

Question 13

regulations of the amount and composition of the body fluids

Answer 13

fluid balance

Question 14

three types of fluids

Answer 14

isotonic, hypotonic, hypertonic

Question 15

solutions are IV fluids that have a similar concentration of dissolved particles as blood

Answer 15

isotonic

Question 16

solutions have a lower concentration of dissolved solutes than blood

Answer 16

hypotonic

Question 17

higher concentration of dissolved particles than blood

Answer 17

hypertonic

Question 18

body fluids outside the cell

Answer 18

extracellular fluid

Question 19

body fluid inside the cell

Answer 19

intracellular fluid

Question 20

level of structural organization of the human body

Answer 20

1. chemical level
2. cellular level
3. tissue level
4. organ level
5. organ system level
6. organism level

Question 21

atoms bond to form molecules with three-dimensional structures

Answer 21

chemical level

Question 22

variety of molecules combine to form the fluid and organelles of a body cell

Answer 22

cellular level

Question 23

a community of similar cells from a body tissue

Answer 23

tissue level (ex. smooth tissue muscles)

Question 24

two or more different tissues combine to form a organ

Answer 24

organ level

Question 25

two or more organs work closely together to perform the functions of a body system

Answer 25

organ system level (ex. urinary tract system)

Question 26

many organ system work harmoniously together to perform the functions of an independent organism

Answer 26

organism level

Question 27

tiny building blocks of matter

Answer 27

atoms

Question 28

atoms combine to form

Answer 28

molecules (ex. water, sugar, and proteins)

Question 29

basic structural and functional units of organisms

Answer 29

cells

Question 30

consists of groups of similar cells that have a common function and structure

Answer 30

tissue

Question 31

4 basic types of tissue

Answer 31

1. epithelial
2. connective
3. muscle
4. nervous

Question 32

structure composed of two or more tissue that performs a specific function for the body

Answer 32

organ

Question 33

group of organs working together to perform a set of related functions

Answer 33

organ system

Question 34

living being that has a cellular structure and that can independently perform all physiological functions necessary for life

Answer 34

organism