Science

Question 1

What is homeostasis?

Answer 1

Mechanism that is involved in the regulation of internal environment

Question 2

Limits of the human body in temperature, blood glucose, CO2 concentration and Ph levels:

Answer 2

Temperature(36-38)
Blood glucose (75-95 mg/dL)
CO2 concentration (35-45mmHg)
PH levels( 7.35-7.45)

Question 3

What are the systems that have a important role in homeostasis by monitoring levels?

Answer 3

Nervous and endocrine system

Question 4

What is negative feedback?

Answer 4

Is the most common and important mechanism to regulate physiological process. It helps to return a system to a set point once it deviates sufficiently from that set point

Question 5

Example of homeostasis:

Answer 5

Thermoregulation

Question 6

Part of the brain that helps to regulate the temperature?

Answer 6

Hypothalamus

Question 7

When body temperature rises…?

Answer 7

Metabolic rate falls
Sweating(evaporation of water)
Decrease muscle activity
Body hair sticks to the body

Question 8

When body temperature falls..?

Answer 8

Metabolic rate increase
Body hair bristles
Increase muscle activitiy
Shivering(involuntary)

Question 9

When the body glucose levels are high, what does the pancreas release?

Answer 9

Insulin

Question 10

When blood levels are low, what does pancreas release?

Answer 10

Glucagon

Question 11

Levels of organization of the human body:

Answer 11

Chemical
Cellular
Tissue
Organ
System/apparatus
Organism/ individual

Question 12

What is a tissue?

Answer 12

Group of similar cells joined by a matrix, which performs a specific function

Question 13

What are the 4 types of tissues?

Answer 13

Epithelial, connective, muscular, and nervous

Question 14

Function of epithelial tissue:

Answer 14

Protects, absorbs, excrete, secrete, sensation. Barrier that selectively regulates the exchange of products

Question 15

Function of connective tissue:

Answer 15

Connects, supports and protects organs

Question 16

Function of muscular tissue:

Answer 16

Contributes to the motion, mantains corporal posture, keeps heat in the body.

Question 17

Function ofnervous tissue:

Answer 17

Starts and transmits nervous impulses

Question 18

Examples of epithelial tissue:

Answer 18

Skin surface

Lining of gastrointestinal tract organs

Question 19

Examples of connective tissue:

Answer 19

Dermis
Tendons and ligaments
Bones and cartilage
Adipose and cartilage
Blood

Question 20

Examples of muscular tissue:

Answer 20

Skeletal muscle
Smooth muscle
Cardiac muscle

Question 21

Examples of nervous tissue:

Answer 21

Neurons and nerves

Question 22

What is a organ?

Answer 22

Is made up of tissues that work together to perform a specific activity

Question 23

What is a system/apparatus?

Answer 23

Groups of two or more organs that work together to perform a specific function for the organism.
But system has homogeneous organs and apparatus has heterogeneous organs

Question 24

What’s the function and what are the organs of intergumentary system?

Answer 24

Protects, regulates temperature

Skin, hair, nails, glands(sweat, and sebaceous)

Question 25

What’s the function and what are the organs of skeletal system?

Answer 25

Support, protection and is the movement.

Bones, cartilages, ligaments