THE Skeletal system
COMPARING SKELETAL SYSTEMS
SKELETAL SYSTEM Of A PRAWN
Describe its skeletal system. What are some key features of it?
The prawn has a hard shell covering its body with three main parts to it- the head, body and tail.
What are some of the roles of the skeleton for the prawn?
The skeleton gives the prawn structure, protection and support. The small, divided sections of the shell body allow the prawn movement. Having the shell divided into segments is more efficient for the prawn giving it more freedom to move.
What other kinds of animals have this kind of skeletal system?
Crustaceans and insects.
How is it different to our skeletal system?
Humans have an endoskeleton which means that our bones are found internally rather than externally like the prawn.
What are some benefits of this kind of skeletal system?
It protects the body of the prawn from impact and damage.
What are some disadvantages of this kind of skeletal system?
The time in which a prawn must shed and regrow its shell makes its body extremely vulnerable.
How might it grow?
The shell of the prawn is shed and constantly regrown.
What is this kind of skeletal system called?
It is called an exoskeleton.
What is the skeleton made of?
The shell is made of a material called shitlin.
The prawn has a hard shell covering its body with three main parts to it- the head, body and tail.
What are some of the roles of the skeleton for the prawn?
The skeleton gives the prawn structure, protection and support. The small, divided sections of the shell body allow the prawn movement. Having the shell divided into segments is more efficient for the prawn giving it more freedom to move.
What other kinds of animals have this kind of skeletal system?
Crustaceans and insects.
How is it different to our skeletal system?
Humans have an endoskeleton which means that our bones are found internally rather than externally like the prawn.
What are some benefits of this kind of skeletal system?
It protects the body of the prawn from impact and damage.
What are some disadvantages of this kind of skeletal system?
The time in which a prawn must shed and regrow its shell makes its body extremely vulnerable.
How might it grow?
The shell of the prawn is shed and constantly regrown.
What is this kind of skeletal system called?
It is called an exoskeleton.
What is the skeleton made of?
The shell is made of a material called shitlin.
SKELETAL SYSTEM Of A WORM
What kind of skeletal system does the worm have?
A hydroskeleton
How does this work?
Hydroskeleton is a structure found in many cold-blooded organisms and soft-bodied animals consisting of a fluid-filled cavity, the coelom, surrounded by muscles. The pressure of the fluid and action of the surrounding muscles are used to change an organism's shape and produce movement, such as burrowing or swimming.
A hydroskeleton
How does this work?
Hydroskeleton is a structure found in many cold-blooded organisms and soft-bodied animals consisting of a fluid-filled cavity, the coelom, surrounded by muscles. The pressure of the fluid and action of the surrounding muscles are used to change an organism's shape and produce movement, such as burrowing or swimming.
SKELETAL SYSTEM Of A Cuttlefish
Describe the cuttlebone.
The cuttle bone is hard, round, porous looking and linear looking.
What would its main role be?
The cuttle bone provides support, structure, buoyancy, and makes the cuttlefish light.
What is it made of?
The cuttle bone is made of calcium carbonate.
Is this an internal or external skeleton?
It is internal.
The cuttle bone is hard, round, porous looking and linear looking.
What would its main role be?
The cuttle bone provides support, structure, buoyancy, and makes the cuttlefish light.
What is it made of?
The cuttle bone is made of calcium carbonate.
Is this an internal or external skeleton?
It is internal.
SKELETAL SYSTEM OF A human being
Describe the structure of our skeletal system.
The human skeletal is made up of 206 bones which serve three main functions; support our body, protect our major organs and allow movement.
What is our skeletal system made of?
The bones in our skeletal system are made up of compact bones (the outer layer) which is hard and dense and spongy bone (inner layer) which resembles a honeycomb texture. The gaps in the holes of spongy bone contain a jelly like substance called bone marrow which is where blood cells are made. Bones are also made of calcium phosphate which makes them hard and collagen which makes them elastic.
What is the role of our skeletal system?
The skeletal system provides three main functions.
Bone marrow is found in the small gaps in spongy bone. Bone marrow is where red blood cells, platelets and some white blood cells are made.
What materials are our bones made of?
Some materials found in bone are calcium phosphate which makes them hard and collagen which makes them elastic.
How does our skeletal system change as we develop (from baby to adult)?
Babies are born which over 300 bones but by the time they become adults they have only 206. This is because most baby bones are made of cartilage and over time they turn into bone, meanwhile some will fuse together to create bigger bones.
What is this kind of skeletal system called?
Human beings alike many other mammals have an endoskeleton.
What other kind of animals have this kind of skeletal system?
Many mammals, birds and reptiles have endoskeletons.
The human skeletal is made up of 206 bones which serve three main functions; support our body, protect our major organs and allow movement.
What is our skeletal system made of?
The bones in our skeletal system are made up of compact bones (the outer layer) which is hard and dense and spongy bone (inner layer) which resembles a honeycomb texture. The gaps in the holes of spongy bone contain a jelly like substance called bone marrow which is where blood cells are made. Bones are also made of calcium phosphate which makes them hard and collagen which makes them elastic.
What is the role of our skeletal system?
The skeletal system provides three main functions.
- It supports our body and keep the human frame upright- with out it we would be a limp pile of organs.
- It protects our organs-these parts are called the axial skeleton and are found in places like the rib cage, skull and vertebrae.
- It allows movement in your body- this part being known as the appendicular skeleton which consists of bones like your shoulder blades and the ones in your arms and legs.
Bone marrow is found in the small gaps in spongy bone. Bone marrow is where red blood cells, platelets and some white blood cells are made.
What materials are our bones made of?
Some materials found in bone are calcium phosphate which makes them hard and collagen which makes them elastic.
How does our skeletal system change as we develop (from baby to adult)?
Babies are born which over 300 bones but by the time they become adults they have only 206. This is because most baby bones are made of cartilage and over time they turn into bone, meanwhile some will fuse together to create bigger bones.
What is this kind of skeletal system called?
Human beings alike many other mammals have an endoskeleton.
What other kind of animals have this kind of skeletal system?
Many mammals, birds and reptiles have endoskeletons.