The Muscular System Unit 1 Lesson 2 pgs. 22-27

RED SLIDE: These are notes that are very important and should be recorded or highlighted in your science book. You will see an image of a page in your book when it is necessary to highlight! BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly.

RED SLIDE: These are notes that are very important and should be recorded in your science journal. BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy

Keep an eye out for “The-Owl” and raise your hand as soon as you see her. She’ll be hiding somewhere in the slideshow

“Hoot, Hoot” “Good Luck!” Keep an eye out for “The-Owl” and raise your hand as soon as you see her. She’ll be hiding somewhere in the slideshow “Hoot, Hoot” “Good Luck!”

New Area of Focus: The Muscular System.

Movement is carried out by the muscular and skeletal system working together.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles turn chemical energy into kinetic energy or the energy of motion.

Muscles pump blood through your body, enable you to breathe, hold you upright, and allow you to move. The Muscular System is mostly made of muscles that allow your body to move and be flexible. Some muscles move material around inside your body Motion Pg. 22

Video! Muscular and Skeletal System working together.

How many muscles are in the human body? F.) Nobody Knows.

answer is… How many muscles are in the human body? A.) 650,000,000 F.) Nobody Knows. answer is…

answer is… How many muscles are in the human body? A.) 650,000,000 F.) Nobody Knows. answer is…

Blood vessels are also woven into the muscles

Blood vessels are also woven into the muscles

Blood vessels are also woven into the muscles to…

Blood vessels are also woven into the muscles to… bring fresh blood with sugar and oxygen.

Blood vessels are also woven into the muscles to… bring fresh blood with sugar and oxygen and to remove waste.

Blood vessels are also woven into the muscles to… bring fresh blood with sugar and oxygen and to remove waste. Waste Carbon Dioxide Water Latic Acid After intense workouts

Waste Muscular, Circulatory, Respiratory System Blood vessels are also woven into the muscles to… bring fresh blood with sugar and oxygen and to remove waste. Waste Muscular, Circulatory, Respiratory System Carbon Dioxide Water Latic Acid After intense workouts

Upon stimulation by an action potential from your brain

Upon stimulation by an action potential from your brain and nerves,

Upon stimulation by an action potential from your brain and nerves, skeletal muscles perform a coordinated contraction by shortening.

Upon stimulation by an action potential from your brain and nerves, skeletal muscles perform a coordinated contraction by shortening. Motor Neuron Muscle Fiber

Muscle is the tissue that contracts and relaxes, making movement possible Pg. 22

Your body has 3 kinds of muscle tissue: skeletal, smooth, and cardiac Pg. 22

Smooth Muscle Found in internal organs Pg. 22 Smooth Muscle Found in internal organs Helps move material through the body Found in blood vessels to help move blood Found in digestive system to help move food Smooth muscle is involuntary Spindle shaped

Cardiac Muscle Tissue that makes up the heart Pg. 23 Cardiac Muscle Tissue that makes up the heart Contains lots of mitochondria to supply energy to the cells Do not stop moving your entire lifetime! Push blood out of the heart and pump it around the body Long, thin, and branched Involuntary

Skeletal Muscle Attached to your bones and allows you to move Pg. 23 Skeletal Muscle Attached to your bones and allows you to move You have control over these muscles (voluntary) Most work in pairs: as one contracts, the other relaxes to allow movement

An example would be the contraction of the biceps and a relaxation of the triceps.

An example would be the contraction of the biceps and a relaxation of the triceps. Copyright © 2010 Ryan P. Murphy

An example would be the contraction of the biceps and a relaxation of the triceps.

An example would be the contraction of the biceps and a relaxation of the triceps. This produces a bend at the elbow. Bicep Tricep

An example would be the contraction of the biceps and a relaxation of the triceps. This produces a bend at the elbow. Bicep Tricep

An example would be the contraction of the biceps and a relaxation of the triceps. This produces a bend at the elbow. The contraction of the triceps and relaxation of the biceps produces the effect of straightening the arm. Bicep Tricep

Bicep Tricep

Bicep Tricep

Pg. 23 The tough strand of tissue that connects a muscle to a bone is called a tendon.

Caution! Graphic Tendons connect muscles to the bones. Picture below is reattachment of Achilles tendon. Caution! Graphic

Tendons connect muscles to the bones. Picture below is reattachment of Achilles tendon.

Ligament Tendon Bones are held together by connective tissues. Ligaments: Bones to bones Tendons: Bones to muscles Ligament Tendon

Ligament Tendon Skeletal and Muscular Bones are held together by connective tissues. Ligaments: Bones to bones Tendons: Bones to muscles Ligament Tendon Skeletal and Muscular

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Review! The human body contains 3 types of muscular tissue. Skeletal Muscle Smooth Muscle Cardiac Muscle C A B

Muscle can also be voluntary and involuntary. Copyright © 2010 Ryan P. Murphy

Muscle can also be voluntary and involuntary. Voluntary muscles you can control. Copyright © 2010 Ryan P. Murphy

Muscle can also be voluntary and involuntary. Voluntary muscles you can control. Copyright © 2010 Ryan P. Murphy

Muscle can also be voluntary and involuntary. Voluntary muscles you can control. “I love you.” Copyright © 2010 Ryan P. Murphy

Muscle can also be voluntary and involuntary. Voluntary muscles you can control. Involuntary muscles are ones that you can’t control.

Muscle can also be voluntary and involuntary. You are able to control the movement of skeletal muscle, so it is called voluntary muscle You are not able to control the movement of smooth and cardiac muscle, so they are called involuntary muscles.

Muscle can also be voluntary and involuntary. Voluntary muscles you can control. Involuntary muscles are ones that you can’t control.

Muscular and Nervous System Muscle can also be voluntary and involuntary. Voluntary muscles you can control. Involuntary muscles are ones that you can’t control. Muscular and Nervous System

Which is voluntary and which involuntary? B Diaphragm

Which is voluntary and which involuntary? B Diaphragm

A B Voluntary You have Control over Which is voluntary and which involuntary? A B Voluntary You have Control over Diaphragm

A B Voluntary You have Control over Which is voluntary and which involuntary? A B Voluntary You have Control over Diaphragm

A B Involuntary Voluntary You have Control over Which is voluntary and which involuntary? A B Involuntary Voluntary You have Control over Diaphragm

A B Involuntary Voluntary You have Control over Which is voluntary and which involuntary? A B Involuntary Voluntary You have Control over Diaphragm

A B Involuntary Voluntary You have Control over Which is voluntary and which involuntary? A B Involuntary Voluntary Involuntary muscles are muscles that that can contract without any conscious control. You have Control over Diaphragm

A B Which is voluntary and which involuntary? Not actual pupil dilation

Which is voluntary and which involuntary? B

A B Involuntary Which is voluntary and which involuntary? Pupil Dilation

A B and blinking Involuntary Which is voluntary and which involuntary? A B and blinking Involuntary Pupil Dilation

A B and blinking Involuntary Which is voluntary and which involuntary? A B and blinking Involuntary Pupil Dilation

A B Voluntary and blinking Involuntary Which is voluntary and which involuntary? A B Voluntary and blinking Involuntary Pupil Dilation

Activity! Pupil Dilation Turn the lights off and shut the blinds for a few minutes. Find a partner and look into their eyes. Turn on the lights and watch the pupils dilate. This is contraction occurs all of the time without you having to really think about it.

Activity! Pupil Dilation Turn the lights off and shut the blinds for a few minutes. Find a partner and look into their eyes. Turn on the lights and watch the pupils dilate. This is contraction occurs all of the time without you having to really think about it.

Which is voluntary and which involuntary? B

Which is voluntary and which involuntary? B

Which is voluntary and which involuntary? B Voluntary

Which is voluntary and which involuntary? B Voluntary

A B Voluntary Involuntary Which is voluntary and which involuntary? A B Voluntary Involuntary Esophagus Intestines Stomach

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Which is skeletal muscle, smooth muscle, and cardiac muscle? Involuntary Involuntary

Bicep

Tricep

Tricep

Tricep Pectoralis

Tongue Made of 8 muscles (4 attached to bone) (4 not attached to bone)