UNIT 1. WE ARE HUMANS

UNIT 1: WE ARE HUMANS

How is the human body organized?

What makes us humans?

How do humans change over time?

What allows humans to grow and live?

Unit Breakout

Building a human. Levels of organization.

Humans, as all living things are made of cells (the smallest /basic units of life).

According to the number of cells, living things can be unicellular (only 1 cell) or multicellular (more than 1 cell). So, humans are multicellular organisms.

Building a human. Levels of organization.

The cells are arranged so that the organism can perform the vital functions.

Human characteristics

Stages of a human life

Foetus

Old adult

Middle-aged adult

Baby

Young adult

Toddler

Adolescence

Old age

Childhood

Adulthood

Teenager

Preteen

Child

3 vital functions

NUTRITION

REPRODUCTION

INTERACTION

It is the process of obtaining food, water and oxygen necessary for health and growth.

It is the process by which living things create young or offspring.

It is the process by which we respond and react to the world around us.

Our body involves several elements with interaction: Sense organs, Nervous S. and Locomotor S.

Our bodies involves several systems with reproduction: Male and female reproductive systems.

Our bodies need several systems with nutrition: Digestive S., Respiratory S., Circulatory S. and Excretory S.

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Vital functions

3 vital functions