structure and support grade 7f

before we start i would like to inform you every thing is in the lms powerpoint rivition​

structure and support

by Mouza alblooshi

​Vocabulary

​üjoint

üligaments

ümuscle

üexoskeleton

üCardiac muscles

üSmooth muscles

üprotection

Poll

four students were discussing muscle they each had a diffrent idea about whether muscles are alive

• millie: i think muscles are living because they are inside of our bodies

• akhim: i think muscles are living because they are made up of cells

• bao: i think muscles are nonliving because their cells do not reproduce

• tony: i think muscles are nonliving because they do not exist as singlecelled organisims

​ CER: Explain the Phenomenon: Structure and Support

​•organisms are structured and supported by different means depending on if they are plants or animals.

•

•Animals are structured and supported by the muscular and skeletal systems.

•

•Plants are structured and supported by roots and stems.

​What supports a body and enable its to move?

​A muscle is made of strong tissue that can be contract in an orderly way when a muscle contracts the cell of the muscle become shorter. when the muscle relaxes the cells return to their original length

Multiple Choice

when the muscles relax it becomes longer, and when it is contracted it becomes shorter.

• true

• false

​What supports a body and enable its to move?

muscles enable the body to move, but cannot function without the support of bones. bones can move because they are attached to the muscles. the skeletal system and the muscular system work together and move your body.

​Critical Thinking

​Muscles allow for movement of the body, but they do not work alone. Brainstorm and write or illustrate to explain how other systems help the body move.

Poll

Muscles allow for movement of the body, but they do not work alone. Brainstorm and write or illustrate to explain how other systems help the body move.

• •When muscles move they move the bones attached to them.

  •Nervous system controls the movement .

  •Circulatory provides oxygen for energy

• none of the above

• not sure

• Muscles provide the tug on the bones needed to bend, straighten, and support joints. Muscles can pull on bones, but they can't push them back to their original position, so the muscles work in pairs of flexors and extensors.

Multiple Choice

Label the ligament in the following diagram.

Poll

what are the 2 types of joints

• Fixed & Movable joints

• hinge & pivot joints

• non of the above

​What supports a body and enable to move?

​The body’s movable joints allow for a wide range of motion.

​

Three different types of joints  to enable movement

​

​Ball and socket

Hinge

Pivot

​What supports a body and enable to move?

​Immovable joints are parts of your skeleton made of bones that connect but do not move.

Your skull contains several immovable joints.

​what are the types of joints

A joint is a point at which two or more bones meet. Fixed joints do not allow any movement of the bones, which protects the brain from injury. Movable joints allow the most movement.

Open Ended

what is the Functions of skeletal system

​Functions of skeletal system

​ØProtection

Bones in your skeleton protect soft fragile tissue and internal organs like the spinal cord, heart, and lungs from damage.

​ØSupport

​

Bones provide support that helps you sit up, stand, and move your body.

​

​ØProduction and storage

​

•Bones produce and store materials needed by your body.

•Red blood cells are produced inside your bones.

•Bones store fat and calcium.

•When your body needs calcium, it is released from bones into the blood.

Poll

what are the different types of muscle?

• only cardiac

• cardiac, skeletal, smooth muscles

• none of the above

​Cardiac Muscle

​•Your heart is made of cardiac muscle, which are found only in the heart.

•A cardiac muscle is a type of involuntary muscle, which is muscle you cannot consciously control.

•When cardiac muscles contract and relax, they pump blood through your heart and through blood vessels throughout the body

​Smooth Muscle

​•Smooth muscles are involuntary muscles, named for their smooth appearance, that line blood vessels and many organs.

•Contraction of smooth muscles helps move material through the body, such as food in the stomach and blood through the vessels.

​lets take a short quiz

​ready 1..2..3..

Multiple Choice

skeletal muscles are involuntary

• true

• false

Multiple Choice

leg muscles are skeletal muscles

• true

• false

Multiple Choice

muscles your blood vessels are made up of smooth muscles

• true

• false

Multiple Choice

cardiac muscles are quick and powerful muscles. it can contract for longer period of time

• true

• false

Multiple Choice

leg muscles are involuntary

• true

• false

Multiple Choice

only smooth muscles are involutary

• true

• false

Multiple Choice

smooth muscles are involuntary

• true

• false

Multiple Choice

cardiac muscles are involuntary

• true

• false

Multiple Choice

skeletal muscles attached to the bones

• true

• false

Multiple Choice

cardiac muscles are voluntary

• true

• false

​What systems do plants have that give them structure and support?

The roots of the plant keep the plant in place.

​the stem is like the skeleton of the plant that hold it upright and gives it support

​What systems do plants have that give them structure and support?

​ØRoots anchor a plant, either in the soil or onto another plant or object such as a rock and enable it to grow upright and not be blown away by wind or carried away by water.

Ø

ØRoots also absorb water and minerals from the soil for cellular process.

Ø

ØSome plants store food in their roots.

​•This food can be used to grow new plant tissues after a dry period of cold season.

•Sugar stored in the roots of sugar maple trees is used to make maple syrup.

​What systems do plants have that give them structure and support?

​•Taproots are large main root with smaller roots growing from it.

​•Prop roots are additional small roots above ground, that help support the plant.

​•Fibrous roots consists of many small branching roots.

•Fibrous roots can spread out and can absorb large amounts of water for the plant.

Multiple Choice

this is a tap root 

• true

• false

Open Ended

why do muscle cells have so many mitochondria? (it's in the structure and support powerpoint revision)

Multiple Choice

what is the effect when a muscle contracts

• the muscle lengthes

• the muscle pushes on a bone

• the muscle shortness

​thank you

​mouza abdulla