Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Muscular & Nervous

Combined work of Muscular & Nervous systems

QuestionAnswer
Why would bodily movement not occur without the nervous system ? Muscles would not know what to do
Give an example of the neuromuscular system at work lifting a weight
A single motor neuron and all the muscles fibres it activates is known as a what ? A Motor unit
How many fibres can a single motor neuron activate ? Thousands
when an impulse is sent down a motor neuron what happens to all the muscle fibres within that motor unit ? they are activated
How many fibres does a motor unit activate All or None -
which law states "a muscle fibre either contracts maximally or not at all" The all or None law
if the frequency of nerve impulses to motor units increases what kind of exercise is taking place Anaerobic - high-intensity short duration exercise
When are more motor units required (less muscle fibers) Intricate movements (hands) playing an instrument
When are less motor units required (more muscle fibers) Bigger movements (legs) Posture or walking etc
A motor unit is made up of one of two muscle types name them both type 1 (slow twitch) or type 2 (fast twitch)
Tasks requiring" less" effort would recruit smaller neurons to control which muscle type type 1 (slow twitch)
Tasks requiring "more" effort would recruit larger neurons to control which muscle type type 2 (fast twitch)
Joint receptors, Muscle spindles & Golgi tendon organs are all kinds of what Muscle sense organs
what do muscle sense organs form part of ? (ANS) Autonomic nervous system
which muscle sense organ is found in the ligaments & joint capsule Joint Receptors
which muscle sense organ is found in the muscle belly ? Muscle spindles
which muscle sense organ is found in tendons (GTO) Golgi tendon organ(s) "GTO's"
which muscle sense organ informs the brain how much tension a muscle is under Golgi tendon organ(s) "GTO's"
which muscle sense organ informs the brain about the length of a muscle fibre (eg overstretch & damage prevention) Muscle spindles
which muscle sense organ informs the brain joint position Joint Receptors
What years are the period of most growth for all the bodys systems ? The early years
In the bodys early years what pathways increase rapidly in number to develop motor skills etc eg movement Neural pathways (motor connections)
In the bodys early years what muscles grow very quickly Postural & stabilising muscles
In the bodys early years what influences the rate at which the neuromuscular system develops Genetics & enviroment
From the age of 4 to 11 in "boys" body mass increases by what % 42-54%
From the age of 5 to 13 in "girls" body mass increases by what % 40-45%
Neuromuscular development is fairly similar in boys & girls up until what period Puberty
At what period does Neuromuscular development change dramatically between boys & girls ? During adolescence
The growth of muscle tissue is known as ? Hypertrophy
Why is the growth of muscle tissue (Hypertrophy) increased quicker during adolescence in boys ? Testosterone (Sex hormones)
Why is there an increase in fat tissue during adolescence in girls ? Oestrogen (Sex hormones)
What does the sex hormone testosterone stimulate Muscle growth
What does the sex hormone Oestrogen stimulate An increase in fat in preparation for bearing children
At what age (not related to exercise) does the neuromuscular system, neural pathways & muscle growth halt ? Around 25
If continually challenged (via exercise) what system can carry on growing past our mid 20s Neuromuscular system
What causes a decline in neurons, the motor system & muscle fibres Ageing
at what age does the loss of neurons start 30
what % of cells can the cerebral cortex lose than in the prime of our live 45%
what % of less can the brain weigh than in the prime of our live 7%
Ageing hinders the relaying of nerve impulses to & from the brain, what does this slow down ? processing of info & voluntary movement
Loss of muscle loss later in life is known as ? Sarcopenia
During Sarcopenia (muscle loss) later in life what % roughly is loss each year 1 to 2 %
Name some "Short Term" effects of exercise on the neuromuscular system Increased - Muscle temp, pliability, power output, nerve link to muscle, recruitment of muscle fibres
"Long Term" effects of exercise on the neuromuscular system muscular wise ? Increased - endurance, hypertrophy, strength
"Long Term" effects of exercise on the neuromuscular system store wise ? Increased - Glycogen & creatine phosphate in muscle
"Long Term" effects of exercise on the neuromuscular system contractile protein wise ? Increased - actin & myosin
What types of protein are actin & myosin contractile proteins
what are contractile proteins eg myosin & actin proteins involved in muscle contraction and movement
"Long Term" effects of exercise on the neuromuscular system metabolic rate wise ? increased basal metabolic rate
What is the term for the ability to burn calories at rest ? increased basal metabolic rate
"Long Term" effects of exercise on the neuromuscular system capillaries surround muscle fibre wise ? size and number increased
What are capillaries ? small blood vessels
"Long Term" effects of exercise on the neuromuscular system neuromuscular connection wise ? increased connections eg skill improvment & motor related fitness
Coordination, reaction time, agility, power & speed re know as what kind of fitness motor related
"Long Term" effects of exercise on the neuromuscular system motor unit wise ? increased motor units - leading to stronger force generation
Muscles contract & relax via messages received from what organ the brain
Exercise can enhance neuromuscular connections by speeding up what nerve impulses
the length of a muscle changing throughout a movement is known as what kind of contraction isotonic
Created by: LeeNelson
Popular Fitness sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards