lec 4

Question 1

basic unit of matter

Answer 1

atom

Question 2

group of atoms bonded together

Answer 2

molecules

Question 3

Large molecule composed of linked smaller
subunits

Answer 3

macromolecules

Question 4

Part of a cell that performs a specialized function

Answer 4

organelle

Question 5

Smallest structural and functional unit of an
organism

Answer 5

cell

Question 6

humans have over ___
different cell types with a
specific structure and
function.

Answer 6

200

Question 7

Groups of cells with a similar structure that act together to perform a specific
action

Answer 7

tissue

Question 8

Group of tissues that perform a specific function for the body

Answer 8

organ

Question 9

Group of organs that work together to perform one or more specific functions

Answer 9

organ system

Question 10

Any individual entity that exhibits the properties of life

Answer 10

organism

Question 11

Formation of Tissues and Organs

Answer 11

1. division
2. growth
3. differentiation
4. migration
5. apoptosis
6. formation of connections

Question 12

germ cells

Answer 12

sex cells
- ova or egg cells
- sperm cells

Question 13

somatic cells

Answer 13

body cells
- epithelial
- connective
- muscle
- nervous

Question 14

connective tissues

Answer 14

areolar connective tissues id epidermis
bone tissues
blood tissues in vascular system

Question 15

nervous tissues

Answer 15

nervous tissues in brain

Question 16

epithelial tissues

Answer 16

• reproductive tissues
• stratified squamous epithelium in epidermis
• columnar epithelium in lining of intestine

Question 17

muscle tissues

Answer 17

• skeletal muscle tissues in voluntary muscles
• cardiac muscle tissues in heart
• smooth muscle in esophagus

Question 18

structure of epithelial

Answer 18

tightly packed
little spaces between

Question 19

function of epithelial

Answer 19

• protects body from drying out, injury, and bacterial invasion (external)
• protects but have additional function (internal)

Question 20

structure of connective

Answer 20

made up of cells and extracellular matrix

Question 21

functions of connective

Answer 21

● Binds structures together
● Provides support & protection
● Fills spaces
● Produces blood cells
● Stores fat

Question 22

structure of muscular

Answer 22

Long & thin cells called
muscle fibers that relax
and contract

Question 23

function of muscular

Answer 23

creates movement

Question 24

structure of nervous

Answer 24

Contains specialized cells
called neurons

Question 25

function of nervous

Answer 25

Work together to transmit electrical impulses

Question 26

A sheet of cells that covers an external or internal surface

Answer 26

epithelial

Question 27

epithelial can be found in

Answer 27

○ Respiratory tract ■ Sweeps up impurities by means of cilia ○ Digestive tract ■ Secretes mucus which protects lining from digestive enzymes ○ Kidney tubules ■ Enhanced absorptive function by the presence of microvilli

Question 28

classification of epithelial tissues

Answer 28

squamous, cuboidal, columnar

Question 29

Most abundant and widely distributed of the primary tissues

Answer 29

connective

Question 30

examples of connective

Answer 30

○ Bone ○ Blood ○ Cartilage ○ Adipose (fats)

Question 31

Found around entry and exit sites of the body (i.e. mouth and anus) and attached to bones to create voluntary movement (e.g. locomotions, facial expressions, postures, etc.)

Answer 31

skeletal

Question 32

Found in walls of major organs & passageways to create involuntary movements (e.g. digestive, urinary, reproductive, airways, blood vessels, etc.)

Answer 32

smooth

Question 33

■ Contracts to pump blood ■ Controls under involuntary control

Answer 33

cardiac

Question 34

■ Intercalated disks

Answer 34

permit contractions to spread quickly throughout the heart

Question 35

Nerve cells called ____, transmit impulses between parts of the nervous system

Answer 35

neurons

Question 36

contains nucleus as well as other organelles

Answer 36

nerve cell body

Question 37

receives signals from sensory receptors or other neurons

Answer 37

dendrites

Question 38

carrier of signal away from the cell body

Answer 38

axon

Question 39

Glial cells called ____, support and nourish the neuron

Answer 39

neuroglia