Chapter 41

Question 1

Cells group to form

Answer 1

tissues

Question 2

tissues group to form

Answer 2

organs

Question 3

organs are linked to form

Answer 3

organ systems

Question 4

Tissue

Answer 4

Muscle tissue
Nervous tissue
Epithelial tissue
Connective tissue

Question 5

Bronchioles

Answer 5

Air tubes
Controlled by smooth muscle

Question 6

Nervous tissue

Answer 6

Complex network of neurons

Question 7

Electrical signals produced in one neuron may stimulate or inhibit other neurons to:

Answer 7

Initiate new electrical signals.
Stimulate muscle cells to contract.
Stimulate glandular cells to release chemicals.

Question 8

Epithelial tissue

Answer 8

Sheets of densely packed cells that..
Cover the body or enclose organs
Line the walls of body cavities
————————————–
Specialized to protect and to secrete and absorb ions and organic molecule

Question 9

cells are arranged to form different types of tissue

Answer 9

Simple – one layer
Stratified – multiple layers
Pseudostratified – one layer, but appears stratified
Transitional – multiple layers; can expand and contract

Question 10

True or false
Epithelial tissues are asymmetrical or polarized

Answer 10

True

Question 11

Connective tissues

Answer 11

Connect, surround, anchor, and support

Includes blood, adipose, bone, cartilage, loose and
dense connective tissue

Question 12

Connective tissues Form extracellular matrix (ECM) around cells

Answer 12

Provides scaffold for attachment
Protects and cushions
Mechanical strength
Transmit information

Question 13

Proteins of the ECM consist of two types:

Answer 13

Collagen and elastin (fibers)
Adhesive proteins

Question 14

Organs are composed of

Answer 14

two or more kinds of tissues

Question 15

Organ system

Answer 15

Different organs work together to perform an overall function

Question 16

Organ development and function are controlled by

Answer 16

hox genes

Question 17

HoxA-3 influences

Answer 17

neck development

Question 18

Similar structure suggests

Answer 18

Similar function

Question 19

All cells, tissues, and organs that mediate diffusion require

Answer 19

extensive surface area

Question 20

Homeostasis

Answer 20

Process of maintaining a relatively stable internal
environment despite changes in external surrounding

Question 21

Homeostatic mechanisms

Answer 21

restore blood glucose to normal levels in
the blood

Question 22

Set point

Answer 22

normal value for controlled variable

Question 23

Sensor

Answer 23

monitors particular variable

Question 24

Integrator

Answer 24

compares signals from the sensor to set point

Question 25

Effector

Answer 25

compensates for deviations between actual value and set point