Y3H_T1_LSN5

• Biologie
• Middelbare school
• havo
• Leerjaar 3

Have ready:

• KWIZL

Use "Force quit" to close everything else.

Entry Ticket

• Do the entry ticket.
• Correct one and give feedback.
• Write a reflection in your notebook.

Have ready:

• Google Classroom
• Your Homework.
• The answer sheet.

HW Check

• Check your hw.
• Discuss the answers.
• Ask questions!

Have ready:

• TB p. 109
• Your Notebook
• This lessonup
• Google Classroom

Topic 1 Lesson 5

Nervous, Muscular & Skeletal System

• I know what the nervous, skeletal & muscular systems are and can explain their function.
• I can explain how these organ systems work together.
• I can name identify various organs in each system and explain their functions. 

Learning goals:

• Nervous system
• Brain
• Spinal cord
• CNS
• PNS
• Motor neurones
• Interneurons
• Sensory neurons 
• Skeletal system
• 
  

Keywords:

• Joints
• Bone
• Cartilage
• Bone marrow
• Muscular system 
• Antagonistic pairs
• Muscles
• Tendons
• Ligaments 

READ:

TB. p.109-110

TB. p.132-134

Your nervous system is your bodies fast communication system:

• Your CNS - Central nervous system (control system)
• Your PNS - Peripheral nervous system (routers)

Nervous System

When your body observes stimuli from it's environment, the following cycle happens:

• PNS - Your body receives a stimuli (senses)
• CNS - Your brain/spinal cord coordinates a response.
• PNS - Muscles / glands create a response

Signals

Signals

Our body has 3 types of neurones:

• sensory neurones - connects senses to the CNS
• interneurones - the neurones within the CNS
• motor neurones - connects the CNS to the effectors

Neurones - Wires

Our skeleton is an important part of our body, it consists of 206 bones. 

• Bones are made out of hard bone and cartilage.
• Hard bone (with calcium) makes it stronger
• Cartilage makes it more flexible

When you get older your bones will have less cartilage

What is a skeleton?

Our skeleton has 4 very different but very important jobs to help us survive:

• support
• movement
• protection
• blood production

The functions

Many organisms look completely different from each other and they have many different types of skeletons:

endoskeleton

exoskeleton

hydroskeleton

Types of skeletons

JOINTS

A joint is a place where two bones meet. This is also the place where your skeleton can move.

TYPES OF JOINTS

Fixed - no movement, skull

Ball and socket- movement in all directions, hip/shoulder

Hinge- movement in 1 direction, elbow/knee

Pivot- turning movement, radius+ulna/neck

Gliding- glide over each other, wrist/backbone

PART OF A JOINT

Ligaments: connect bone to bone

Tendon: connect bone to muscle

Synovial joint: ball and socket, hinge, pivot. Also have synovial fluid to oil the joint

MUSCLES

Muscles can work in antagonistic pairs, because muscles can only pull or relax. They need a partner (antagonist) to move the opposite way

• Complete them in the Google docs.
• You are not allowed to share the document and work together.
• Your need to have it completed & submitted before the next lesson. 

In class Assignments:

• I know what the nervous, skeletal & muscular systems are and can explain their function.
• I can explain how these organ systems work together.
• I can name identify various organs in each system and explain their functions. 

Learning goals:

Today I have learned:

1.

2. 

Summary of the day:

STUDY FOR THE QUIZ!!!

Hw for next time: