Intro to Anatomy (day one of the shits)

Question 1

What is each cell surrounded by and why is it necessary? (2)

Answer 1

1. External or plasma membrane

2. Allows needed substances in while preventing the entry of potentially dangerous substances

Question 2

What system is the body enclosed by?

Answer 2

Integumentary system → skin

Question 3

Define: responsiveness

Answer 3

Ability to sense changes (stimuli) in the environment and react to them

Question 4

How do nerve cells communicate with each other and other parts of the body? (1)

Answer 4

Via electrical impulses

Question 5

Define: digestion

Answer 5

Process of breaking down ingested food into simple molecules that can be absorbed into the blood

Question 6

What system distributes blood throughout the body?

Answer 6

Cardiovascular

Question 7

Define: metabolism

Answer 7

All chemical reactions that occur within the body cells

Question 8

What system regulates metabolism?

Answer 8

Endocrine system

Question 9

What does the endocrine system do and how? (2)

Answer 9

Regulate and control the body by secreting hormones using glands

Question 10

Define: excretion

Answer 10

Removal of wastes from the body

Question 11

What is the constant reproduction from a cellular level?

Answer 11

Cells dividing and producing daughter cells

Question 12

Why must cells continuously divide?

Answer 12

Must provide new cells for growth and repair

Question 13

What % of the air we breathe is oxygen?

Answer 13

20% oxygen

Question 14

Can we use nutrients if oxygen is unavailable?

Answer 14

Nope

Question 15

What % of our body weight is water?

Answer 15

60-80%

Question 16

What is the single most abundant chemical in the body?

Answer 16

Water

Question 17

What is the usual, healthy body temperature in a human being?

Answer 17

37°C

Question 18

Define: homeostasis

Answer 18

The body’s ability to maintain stable internal conditions even though the outside world is continuously changing