levels of structural system

Question 1

is the maintenance of internal environment

Answer 1

Homeostasis

Question 2

Homeostatic imbalances – disturbances in homeostasis can lead to

Answer 2

disease or death if uncorrected

Question 3

Body’s internal environment – result of a wide range of coordinated processes or variables, including

Answer 3

temperature, chemical composition of blood and other body fluids, and many others

Question 4

To prevent imbalance, most variables are ? maintained within a narrow range, close to a normal value

Answer 4

controlled (regulated) variables;

Question 5

increases and reinforces initial stimulus

Answer 5

Positive feedback loops

Question 6

Example of positive feedback loops with uterine contractions

Answer 6

When uterine contractions begin at childbirth, a positive feedback loop is activated so that uterine contractions increase to expel the baby.

Question 7

return variable to its normal value

Answer 7

negative feedback loop

Question 8

example of negative feedback loop with temp and muscle contractions

Answer 8

when body temperature decreases, muscle contraction is stimulated to produce heat and bring body temperature back to homeostasis

Question 9

Anatomical Position is

Answer 9

Body is standing upright; feet are shoulder width apart, with upper limbs at sides of trunk and head and palms facing forward

Question 10

Define frontal plane (coronal plane):

Answer 10

divides body or body part into anterior and posterior sections

Question 11

Define transverse plane (horizontal plane):

Answer 11

divides body or body part into superior and inferior sections

Question 12

Define sagittal plane:

Answer 12

divides body or body part into right and left sections

Question 13

Superior refers to

Answer 13

toward head

Question 14

inferior (caudal) refers to

Answer 14

toward tail

Question 15

Anterior refers to

Answer 15

front

Question 16

posterior (dorsal) refers to

Answer 16

back

Question 17

medial refers to

Answer 17

to a position that is closer to midline

Question 18

lateral refers to

Answer 18

a position that is further away

Question 19

The body’s midline is an

Answer 19

imaginary line that runs down middle of the body

Question 20

Proximal refers to

Answer 20

something being closer to point of origin;

Question 21

distal refers to

Answer 21

being more distant or further away from same point of origin

Question 22

Superficial refers to

Answer 22

structures that are closer to surface of the body

Question 23

deep refers to

Answer 23

those further away from the surface

Question 24

Parietal layer refers to

Answer 24

outermost layer attached to surrounding structures

Question 25

visceral refers to

Answer 25

in contact with underlying organ