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Flashcards in Exam 1 Deck (26):
1

Anatomical position

The body is erect, arms hanging at the sides, palms forward, and thumbs pointed away from the midline

2

Can lungs carry out excretory functions

Yes, carbon dioxide is a metabolic waste the lungs excrete

3

Homeostasis

The capacity to maintain relatively stable internal conditions despite changes in the external environment

4

Maintain boundaries

To seperate internal and external environments

5

Movement

To obtain food, breathe, move, protect from harm

6

Responsiveness

Detect and respond to environmental changes

7

Digestion

Break down of food for absorption into the blood stream

8

Metabolism

Chemical reactions for energy, growth and body processes

9

Excretion

To remove wastes from the body

10

Hierarchy of body organisations

Atoms combine to form molecules
->cells-> tissue -> organs-> body

11

Digestive system

Takes in nutritions, breaks them down, and eliminates unabsorbed matter(feces)

12

Respiratory system

Takes in oxygen and eliminates carbon dioxide

13

Cardiovascular system

Via the blood, distributes oxygen and nutrients to all body cells and delivers wastes and carbon dioxide to disposal organs

14

Urinary system

Eliminates nitrogenous wastes and excess ions

15

Integumentary system

Protects the body as a whole from the external environment

16

Skeletal system

Protects and supports badly organs, and provides a framework the muscles use to cause movement.

17

Muscular system

Allows manipulation of the environment, locomotion, and facial expression. Maintains posture and produces heat

18

Nervous system

Control system of the body, responds to internal and external changes by activating appropriate muscles and glands

19

Endocrine system

Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use by body cells

20

Lymphatic system/ immunity

Picks up fluid leaked from blood vessels and returns it to blood. Disposes of debris in the lymphatic stream. Houses white blood cells involved in immunity. The immune response mounts the attack against foreign substances within the body

21

Regulation mechanisms

Variable
Receptor
Control centre
Effector

22

Variable

The characteristic of interest. If this characteristic changes outside the normal range it is then the stimulus

23

Receptor

Detects change

24

Control centre

Monitors signals of changes identified, integrates information of different sources and decides and signals if a response is required

25

Effector

This takes action on the change to modify the stimulus size and returns variable to homeostatic level

26

Negative feedback

Reduces the size of the stimulus size