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Ok so this is my 19th PPT of the series dedicated to the Human Anatomy. The humor is mine. So just change it to fit your needs. Hope this helps.
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Chapter 6 Chapter 6 The Muscular SystemThe Muscular System
Disclaimer: Included in this presentation are videos and pictures you will not find in your book, make note of the information and move on. Working smarter is not working harder.
ObjectivesObjectives
The overview of the make up of the The overview of the make up of the Skeletal Muscle systemSkeletal Muscle system
Muscle: Functions, Anatomy & Muscle: Functions, Anatomy & Physiology of a Muscle Contraction : Physiology of a Muscle Contraction : SarcomereSarcomere
Nervous system connection to the Nervous system connection to the Skeletal Muscle system : Large Scale Skeletal Muscle system : Large Scale
What do we already know?What do we already know?
How Many types of Muscles are there?
3How many are Voluntary?
1
Which one is it?
Skeletal
Types of Muscles Types of Muscles
Cardiac:
Mono-nucleated
Involuntary
Branched
Connected with Intercalated Disks for synchronization of movement
Types of MusclesTypes of Muscles
Smooth:
Mono-nucleated
Involuntary
Non-striated
Moves in waves called “PERISTALSIS”
Real life:Real life: Not human of course
Types of MusclesTypes of Muscles
Skeletal:
Multi-nucleated
Voluntary
Striated
Moves the Body (amongst other things)
He “Stuffs”
Overview: Skeletal Muscles Overview: Skeletal Muscles
There are 650 muscles on average in There are 650 muscles on average in the human body the human body
Muscle groups always complement Muscle groups always complement each other, one contracting = one each other, one contracting = one relaxing relaxing
Ex. Biceps & Triceps, Back & Ex. Biceps & Triceps, Back & AbdominalsAbdominals
Muscles need nerve impulses to make Muscles need nerve impulses to make them contract. them contract.
So what does 650 muscles look So what does 650 muscles look like?like?
Like this…
Functions of Muscles Functions of Muscles
Movement
Maintaining posture
Functions of MusclesFunctions of Muscles
Stabilizing Joints Generating heat
How does this relate to what How does this relate to what we already know?we already know?
Things Necessary for LifeThings Necessary for Life
Chapter 1 Chapter 1
Remember all these?Remember all these?
M.R. B.G. D.R.E.M.M.R. B.G. D.R.E.M.
Things Necessary for LifeThings Necessary for Life Boundaries Boundaries = something that separates the = something that separates the
outside from the inside of the organismoutside from the inside of the organism MovementMovement = for getting food and = for getting food and
causing things in the body to move causing things in the body to move like like blood in your veinsblood in your veins
ResponsivenessResponsiveness= reactions to = reactions to stimulistimuli
DigestionDigestion = breaking down food into = breaking down food into useful energy to be useduseful energy to be used
Metabolism Metabolism = all chemical reactions = all chemical reactions in the body in the body
ExcretionExcretion = getting rid of waste from = getting rid of waste from the bodythe body
Things Necessary for Life Things Necessary for Life cont. cont.
ReproductionReproduction = the ability to = the ability to produce OFFSPRING produce OFFSPRING
GrowthGrowth = To increase in size. = To increase in size. Typically by increasing the number of Typically by increasing the number of cells. cells.
Complimenting Muscles Complimenting Muscles Groups Groups
For One Muscle to contractcontract
Another muscle must relaxrelax
The is how it is across the entire body.
Now you try it: Head Back Head Forward
Anatomy of a Muscle Anatomy of a Muscle
Largest Smallest OR Outside In (Which ever you prefer)
Epimysium
Perimysium
Fascicle
Endomysium
Muscle Fiber
A Closer look at Muscle A Closer look at Muscle FiberFiber
Largest Smallest OR Outside In (Which ever you prefer)
Sarcolemma Myofibril Sarcomere
Of Course you would ask “What is a Sarcomere?”
Lets Turn the page and Find out
A Closer look at Muscle A Closer look at Muscle FiberFiber
Welcome to the:
Sarcomere Sarcomere The smallest unit of the Muscle system I will be expecting you to know.
A Sarcomere is simply the space from
Z-Disc Z-Disc
You with me so far?You with me so far?We went from
Muscle Belly
Epimysium
Perimysium
Fascicle
Endomysium
Individual Muscle FiberSarcolemma
Myofibril
Sarcomere
Biggest
Smallest
Anatomy & Physiology of a Anatomy & Physiology of a Muscle Contraction: SarcomereMuscle Contraction: Sarcomere
~Hold Please~
Path of a Muscle Contraction: Path of a Muscle Contraction: Large Scale Large Scale
Stimulus: Someone tickles you
The signal is sent to the CNS (Central Nervous system)
Action: You interpret the signal and send a signal to your muscles for reaction = you turn and punch them in the head.
Interpretation of that signal = “Someone just tickled “Someone just tickled me”me”
= Muscle contraction
So what did we cover?So what did we cover?
The Skeletal Muscle System is VoluntaryThe Skeletal Muscle System is Voluntary It is part of the Things Necessary for LifeIt is part of the Things Necessary for Life From Largest to Smallest: What makes up From Largest to Smallest: What makes up
a musclea muscle What a Sarcomere What a Sarcomere isis and and doesdoes during a during a
muscle contractionmuscle contraction The involvement of CNS for muscle The involvement of CNS for muscle
reaction and contraction. (generally reaction and contraction. (generally speaking)speaking)
What’s to comeWhat’s to come
Start ofStart of: : Lab of Head and Lab of Head and NeckNeck
Lab of Torso and ArmLab of Torso and Arm *if *if Head and Neck books are Head and Neck books are
occupied*occupied*
Lecture 2:Lecture 2: Motor Neuron Motor Neuron pathways and Body pathways and Body
Movements Movements