UNIT 2 HUMAN INTERACTION AND REPRODUCTION

GRADE 5 - CEIP NTRA. SRA. DEL ROSARIO

unit 2human INTERACTION AND REPRODUCTION

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INDEX

HUMAN INTERACTION AND REPRODUCTION

04 - THE REPRODUCTIVE SYSTEM

01 - THE FIVE SENSES

02 - THE NERVOUS SYSTEM

05 - REVIEW

03 - THE LOCOMOTOR SYSTEM

06 - QUIZZ

HUMAN INTERACTION

01

THE FIVE SENSES

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human INTERACTION

THE FIVE SENSES

TASTE

TOUCH

SIGHT

SMELL

HEARING

human INTERACTION

SIGHT

THE FIVE SENSES

You can see using your eyes. The eyes detect light.

lens

retina

iris

pupil

optic nerve

cornea

human INTERACTION

SIGHT

THE FIVE SENSES

5. Nerve receptors in the retina detect light and send electrical signals to the optic nerve.

4. The lens focuses the light in the retina.

lens

3. The iris controls the size of the pupil and the amount of light that enters the eye.

retina

iris

2. The light enters the eye through the pupil.

pupil

optic nerve

cornea

1. The light passes through the cornea

6. The optic nerve carries the information to the brain.

human INTERACTION

HEARING

THE FIVE SENSES

ossicles

eardrum

auditory nerve

You can hear using your ears. The ears detect sounds.

cochlea

auditory canal

human INTERACTION

HEARING

THE FIVE SENSES

3. The ossicles vibrate too with the eardrum.

5. The auditory nerve carries the electrical signals to the brain.

ossicles

eardrum

2. The sound waves make the eardrum vibrate.

auditory nerve

1. The sound waves go through the auditory canal.

cochlea

4. The cochlea detects vibrations and produces electrical signals.

auditory canal

human INTERACTION

TASTE

THE FIVE SENSES

You can taste using your tongue. The tongue detects flavours.

taste bud

tongue

gustatory nerve

human INTERACTION

TASTE

THE FIVE SENSES

2. The taste buds have nerve receptors that detect flavours.

taste bud

tongue

1. The tongue is covered with taste buds.

gustatory nerve

3. The gustatory nerve carries the information to the brain.

human INTERACTION

SMELL

THE FIVE SENSES

olfatory nerve

nerve receptors

You can smell using your nose. The nose detects smells.

nostril

human INTERACTION

SMELL

THE FIVE SENSES

2. The nerve receptors inside the nose detect particles in the air.

olfatory nerve

3. The olfatory nerve carries the information to the brain.

nerve receptors

1. The air enters the nose through the nostrils.

nostril

human INTERACTION

TOUCH

THE FIVE SENSES

You can touch using your skin. The skin detects textures, temperature and pain.

epidermis

blood vessels

dermis

hypodermis

nerve

human INTERACTION

TOUCH

THE FIVE SENSES

1. The epidermis protects us from external factors.

epidermis

blood vessels

dermis

2. The dermis contains blood vessels and nerves.

hypodermis

nerves

3. The hypodermis regulates the body temperature.

The nerves send electrical signals to the brain.

HUMAN INTERACTION

02

THE NERVOUS SYSTEM

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human INTERACTION

THE NERVOUS SYSTEM

The nervous system is divided in two parts.

PERIPHERAL NERVOUS SYSTEM

CENTRAL NERVOUS SYSTEM

CENTRAL NERVOUS SYSTEM

human INTERACTION

THE NERVOUS SYSTEM

The central nervous system is made up by the brain and the spinal cord.

brain

spinal cord

CENTRAL NERVOUS SYSTEM

human INTERACTION

THE NERVOUS SYSTEM

The brain is divided into 3 parts:

The cerebellum controls balance, movement and coordination.

CEREBRUM

The cerebrum controls voluntary actions.

CEREBELLUM

The brain stem controls involuntary actions.

BRAIN STEM

CENTRAL NERVOUS SYSTEM

human INTERACTION

THE NERVOUS SYSTEM

The spinal cord is protected by vertebrae.

SPINAL CORD

The spinal cord controls reflex actions.

PERIPHERAL NERVOUS SYSTEM

human INTERACTION

THE NERVOUS SYSTEM

The peripheral nervous system is made up of nerves, which contain cells called neurons.

NEURON

SENSORY NEURONS: They carry information from the sense organs to the brain.

MOTOR NEURONS: They carry information from the brain to the locomotor system.

HUMAN INTERACTION

03

THE LOCOMOTOR SYSTEM

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human INTERACTION

THE LOCOMOTOR SYSTEM

The locomotor system is made up by the skeleton and muscles.

SKELETON

MUSCLES

human INTERACTION

THE LOCOMOTOR SYSTEM

The skeleton contains bones and joints.

They provide shape and support to our body, and protect our organs.

BONES

They connect our bones and allow us to move our body.

JOINTS

human INTERACTION

skull

THE LOCOMOTOR SYSTEM

clavicle

scapula

humerus

ribcage

BONES

ulna

vertebrae

radius

femur

pelvis

tibia

fibula

human INTERACTION

THE LOCOMOTOR SYSTEM

shoulder

elbow

JOINTS

wrist

hip

knee / patella

ankle

human INTERACTION

THE LOCOMOTOR SYSTEM

The muscular system contains muscles and tendons.

They are flexible and can contract and relax. They hold the skeleton together.

MUSCLES

They connect the muscles to the bones.

TENDONS

human INTERACTION

frontal

THE LOCOMOTOR SYSTEM

trapezius

pectoral

biceps

deltoid

triceps

abdominal

gluteus

quadriceps

biceps femoris

calf

HUMAN REPRODUCTION

04

THE REPRODUCTIVE SYSTEM

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human reproduction

PUBERTY

PUBERTY

Glands in skin produce more oil and acne appears.

Hair starts growing underarms and in the pubic area.

Hair starts growing in arms and legs.

Facial hair starts to grow.

Voice becomes deeper.

Breasts start to develop.

Period starts.

human reproduction

FEMALE REPRODUCTIVE SYSTEM

FEMALE REPRODUCTIVE SYSTEM

The ovaries produce the female reproductive cells (ova).

fallopian tubes

The fallopian tubes carry the ova from the ovaries to the uterus.

ovaries

The uterus is the organ where the fetus develops during pregnancy.

The vagina connects the uterus to the outside of the body.

uterus

vagina

The vulva is the external part of the female reproductive system.

vulva

human reproduction

MALE REPRODUCTIVE SYSTEM

MALE REPRODUCTIVE SYSTEM

seminal vesicles

The prostate produces liquid to make sperm.

The seminal vesicles produce liquid to make sperm.

prostate

The vas deferens connect the testicles to the urethra.

The penis is the external part of the male reproductive system.

vas deferens

penis

The urethra is the canal that carries urine and semen out of the body.

The testicles produce the reproductive male cells (sperm cells).

urethra

testicles

huMAN REPRODUCTION

PREGNANCY AND BIRTH

Human reproduction begins when a woman becomes pregnant.

Men produce sperm cells.

Women produce ova.

After 40 weeks, the baby is ready to be born and goes out of the body through the vagina.

During fertilisation, an sperm cell joins an ova and they become a zygote.

The cells in the zygote divides and after 2 weeks, it becomes an embryo.

At about 8 weeks, the embryo has most of its organs and is a fetus.

05

REVIEW

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human interaction and reproduction

review

HUMAN REPRODUCTION

07

QUIZZ

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human interaction and reproduction

QUIZZ

The tongue detects five flavours.