Organ Systems, Structural Organization, Characteristics of life

Question 1

includes the activities promoted by the muscular
system, such as propelling ourselves from one place to another by running or swimming, and manipulating the external environment with our nimble fingers

Answer 1

movement

Question 2

the ability to sense changes (which serve as stimuli) in the environment and then respond to them.

Answer 2

Responsiveness

Question 3

breaking down of ingested foodstuffs to simple

molecules that can be absorbed into the blood.

Answer 3

Digestion

Question 4

broad term that includes all chemical reactions that occur within body cells.

Answer 4

Metabolism

Question 5

the process of removing wastes, or excreta

from the body.

Answer 5

Execretion

Question 6

occurs at the cellular and the organismal level.

Answer 6

Reproduction

Question 7

an increase in size of a body part or the organism as

a whole.

Answer 7

Growth

Question 8

Forms the external body covering, and

protects deeper tissues from injury

Answer 8

Integumentary System

Question 9

Protects and supports body organs, and
provides a framework the muscles use
to cause movement.

Answer 9

Skeletal System

Question 10

Allows manipulation of the environment,

locomotion, and facial expression.

Answer 10

Muscular System

Question 11

As the fast-acting control system of the
body, it responds to internal and external
changes by activating appropriate
muscles and glands.

Answer 11

Nervous System

Question 12

Glands secrete hormones that regulate
processes such as growth, reproduction,
and nutrient use (metabolism) by body
cells.

Answer 12

Endocrine System

Question 13

Blood vessels transport blood, which
carries oxygen, carbon dioxide,
nutrients, wastes, etc. The heart pumps
blood.

Answer 13

Cardiovascular System

Question 14

Picks up fluid leaked from blood vessels
and returns it to blood. Disposes
of debris in the lymphatic stream.
Houses white blood cells (lymphocytes)
involved in immunity. The immune
response mounts the attack against
foreign substances within the body.

Answer 14

Lymphatic System

Question 15

Keeps blood constantly supplied with
oxygen and removes carbon dioxide.
The gaseous exchanges occur through
the walls of the air sacs of the lungs.

Answer 15

Respiratory System

Question 16

Breaks down food into absorbable units
that enter the blood for distribution to
body cells. Indigestible foodstuffs are
eliminated as feces.

Answer 16

Digestive System

Question 17

Eliminates nitrogenous wastes from the
body. Regulates water, electrolyte and
acid-base balance of the blood.

Answer 17

Urinary System

Question 18

Overall function is production of offspring. Testes produce sperm and male sex hormone,
and male ducts and glands aid in delivery of sperm to the female reproductive tract. Ovaries
produce eggs and female sex hormones. The remaining female structures serve as sites for
fertilization and development of the fetus. Mammary glands of female breasts produce
milk to nourish the newborn.

Answer 18

Reproductive System

Question 19

simplest level of the structural hierarchy

Answer 19

Chemical Level

Question 20

tiny building blocks of matter

Answer 20

atom

Question 21

combined atoms

Answer 21

molecules

Question 22

the smallest units of living

things.

Answer 22

cells

Question 23

groups of similar cells that have

a common function.

Answer 23

Tissues

Question 24

4 tissue types

Answer 24

epithelium, muscle, connective tissue, and nervous

tissue.

Question 25

is a discrete structure composed of at least two
tissue types that performs a specific
function for the body.

Answer 25

Organs

Question 26

Organs that work together to accomplish a common purpose

Answer 26

Organ System

Question 27

The highest level of organization

Answer 27

Organism

Question 28

represents the sum total of

all structural levels working together to keep us alive

Answer 28

Organismal Level