Unit 1 - Cells, Tissues, And Organ Systems Flashcards Preview

SHS (Zielke) Science 8 > Unit 1 - Cells, Tissues, And Organ Systems > Flashcards

Flashcards in Unit 1 - Cells, Tissues, And Organ Systems Deck (32):
1

Cell

Basic unit of a living organism that can perform all the processes associated with life (Pg. 1)

2

Diffusion

Movement of particles from an area of high concentration to areas of lower concentration (Pg. 33)

3

Multicellular

Having or being made up of two or more cells; most plants and animals are examples (Pg. 13)

4

Organ

Group of different types of tissues that work together to form a function (Pg. 3)

5

Organelle

In cells that have a nucleus, small structures that work within a cell preforming specific functions for the cell (Pg. 13)

6

Osmosis

Movement of water particles through a selectively permeable membrane from a area of higher concentration to an area of lower concentration (Pg. 34)

7

Selectively Permeable

Allowing certain substances, but not others, to pass through; cell membranes are an example (Pg. 33)

8

Organ System

Group of organs that work together to perform a function (Pg. 45)

9

Tissue

Group of the same type of cells that work together to perform a specific function (Pg. 3)

10

Unicellular

Having or being made up of only one single cell; most microscopic organisms are examples (Pg. 13)

11

Cytoplasm

The liquid-like substance contained in the cell (Pg. 13)

12

Specialized Cells

Cells in different parts of the body having special features that enable them to perform specific functions (Pg. 39)

13

Red Blood Cells

Cells that can carry oxygen to all the cells of the body (Pg. 39)

14

Connective Tissue

Tissue which supports other tissues and connects different parts of the body; includes blood, fat, bones, cartilage, and tendons (Pg. 39)

15

Epithelial Tissue

Tissue that covers the surface of the body and the outside of organs; includes skin and the linings of passages inside the body (Pg. 39)

16

Nervous Tissue

Tissue that carries messages to and from the brain and other parts of the body; includes brain, spinal cord, and nerves (Pg. 40)

17

Muscle Tissue

Tissue that allows the body to move; specialized for contraction (Pg. 40)

18

Interdependent

Depending on one another - here this refers to the concept that the body’s organ systems depend on one another to function (Pg. 43)

19

Respiratory System

A series of organs responsible for taking in oxygen and expelling carbon dioxide.

20

Digestive System

A group of organs working together to convert food into energy and basic nutrients to feed the entire body.

21

Nervous System

A complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body.

22

Excretory System

The system of an organism's body that performs the function of excretion, the bodily process of discharging wastes.

23

Circulatory System

Is an organ system that permits blood to circulate and transport nutrients oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body.

24

Heart

Fist-sized organ that acts as a hydraulic pump for the circulatory system; pumps blood throughout the body; has a squeezing (contracting) action followed by a relaxing action (Pg. 50)

25

Arteries

Tube-like blood vessels that take blood away from the heart, transporting it to to other parts of the body (Pg. 50)

26

Veins

In animals: tube-like vessels that transport blood from the organs back to the heart (Pg. 50)

27

Pulse

Bulge in an artery caused by the entry of new blood (Pg. 50)

28

Alveoli

Tiny air-filled sacs in the lungs surrounded by blood vessels (Pg. 61)

29

Capillaries

Thin, hair-like vessels connecting arteries and veins; capillary tissue is only one cell thick (Pg. 62)

30

Stimuli

A change in the environment that triggers a reaction or response (Pg. 66)

31

Holistic

Worldview suggesting that everything is interconnected (Pg. 7)

32

Reductionist

Breaking complex problems down into smaller parts to make it easier to study them (Pg. 7)