Ch 1: (pg 1-6)

Question 1

characteristics of living human organism (6)

Answer 1

metabolism, ability to respond to internal/external stimuli, movement, growth, differentiation, reproduction

Question 2

what is metabolism
(anabolic + catabolic rxns.)

Answer 2

the sum of all the chemical rxns. in the body

Question 3

what’s an anabolic rxn.

Answer 3

a rxn. that builds lg. and complex organic mlcs. using ATP

Question 4

what’s a catabolic rxn.

Answer 4

breaking down of lg. organic mlcs. into smaller mlcs. that body uses for energy and heat

Question 5

what are the 4 tissues of the body

Answer 5

epithelium, connective tissue, muscle tissue, nervous tissue

Question 6

3 types of muscle tissue

Answer 6

smooth, cardiac, skeletal

Question 7

what does connective tissue entail

Answer 7

tendons, ligaments, bone, blood

Question 8

what are some examples of epithelial tissue

Answer 8

epidermis of skin, musosal epithelium lining intestine, serosa covering surface of stomach

Question 9

what is homeostasis

Answer 9

maintenance of relatively constant internal environment (blood sugar, blood pH, body temp., etc…)

Question 10

what two systems regulate homeostasis

Answer 10

nervous and endocrine

Question 11

what is differentiation

Answer 11

the process whereby a cell specializes into a specific cell with specific functions

Question 12

what are the levels of structural organization of the body

Answer 12

chemical–> cells –> tissues –> organs –> organ systems –> organism

Question 13

what’s the feedback sys.
(homeostasis)

Answer 13

a cycle of events which involve continuously monitoring a controlled condition of the body and reporting back to CNS

Question 14

what is stress

Answer 14

stimulus that disturbs homeostasis

Question 15

the 3 components of a feedback sys

Answer 15

receptor->control center->effector

Question 16

if a response reverses the original stimulus then the feedback sys. is described as a _________. Give an example

Answer 16

negative feedback sys.
maintaining blood pressure

Question 17

if the response enhances the original stimulus the feedback sys. is described as ______. Ex)?

Answer 17

positive feedback sys.
labor contractions- once it begins the positive feedback sys. further increases the process OR blood clotting

Question 18

homeostatic imbalances can result in ______ and _____

Answer 18

disorders, diseases

Question 19

a sign of a disease is ______

Answer 19

a change that can be OBSERVED and MEASURED
ie) rash, inflammation, vomiting

Question 20

FEELING nauseous or anxious is a _______

Answer 20

symptom

Question 21

dilute, watery solutions containing dissolved chemicals are ______

Answer 21

body fluids

Question 22

what are some extracellular fluids in our body

Answer 22

lymph, plasma, interstitial fluids

Question 23

what is plasma

Answer 23

extracellular fluid of blood

Question 24

what is interstitial fluid

Answer 24

fluid found in spaces between cells

Question 25

what is lymph

Answer 25

contains interstitial fluid that is brought back to heart by lymphatic vessels to be reincorporated into blood