<TED Worksheet>
16. What makes muscles grow?
Jeffrey Siegel
<4:04>   November 2015

 

Questions
(PDF)   (Word)

Answers
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Trascript

 

≪Questions:What makes muscles grow?≫
1. How many muscles do we have? How much of our body weight do they make up?

The number of muscles : _______

How much of your body weight : _____

 

2. The following passage describes how our muscles work to open a door,
and how our muscles grow. Fill in the blanks.

<><><>><><><>

Step 1: Your (1) _____________

sends a signal to motor neurons inside your arm.

 

Step 2: Motor neurons receive this message, and they fire, causing your muscles to

(2)__________________ and

(3)______________________ ,

which pulls on the

(4)__________________

in your arm and generates the needed movement.




Step 3: If the door is made of solid iron,

your brain appeals to other

(5)______________________ for

help because your arm muscles alone

won’t be able to generate enough tension to open it.

(e.g.) You plant your (6)_______________,

tighten your (7)______________,

and tense your (8)____________.

 

Step 4: As you expose your muscles to stress,

they experience microscopic

(9)______________________, which is a good thing.

 

Step 5: In response, the injured cells release inflammatory molecules called cytokines that activate

the (10)______________________

system to repair the

(11)______________________.

 

Step 6: The resulting cycle of damage and repair eventually makes muscles

(12)__________________ and

(13)________________

as they adapt to progressively greater demands.

<><><>><><><><><><>




3. What is muscular atrophy?

 

 

4. In addition to damaging your muscles, what are three things your muscles will need to grow?

(1) _________________

(2) _________________

(3) _________________

 

5. Why did the speaker mention “It is with muscles as it is with life?”

 

 




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≪Answers:What makes muscles grow?≫
1. How many muscles do we have? How much of our body weight do they make up?

The number of muscles :___Over 600___

How much of your body weight : ___1/3 to 1/2__

 

2. The following passage describes how our muscles work to open a door,
and how our muscles grow. Fill in the blanks.

<><><>><><><><><><>

Step 1: Your (1)___brain___ sends a signal

to motor neurons inside your arm.

Step 2: Motor neurons receive this message,

and they fire, causing your muscles to

(2)___contract___ and (3)____relax___,

which pulls on the (4)__bones__ in your

arm and generates the needed movement.

 

Step 3: If the door is made of solid iron,

your brain appeals to other (5)_muscles_ for

help because your arm muscles

alone won’t be able to generate enough

tension to open it.

(e.g.) You plant your (6)__feet__,

tighten your (7)__belly__, and

tense your (8)__back___.




Step 4: As you expose your muscles to stress,

they experience microscopic

(9)__damage__, which is a good thing.

 

Step 5: In response, the injured cells release

inflammatory molecules called cytokines that activate

the (10)___immune___ system

to repair the (11)____injury____.

 

Step 6: The resulting cycle of damage

and repair eventually makes muscles

(12)__bigger___ and (13)__stronger_

as they adapt to progressively greater

demands.

<><><>><><><><><><>




3. What is muscular atrophy?
It is a process in which your muscles shrink due to not exposing your muscles to some resistance.

 

4. In addition to damaging your muscles, what are three things your muscles will need to grow?

(1)_proper nutrition (protein)___

(2)_hormones (insulin-like growth factor and testosterone)___

(3)_resting______

 

5. Why did the speaker mention “It is with muscles as it is with life?”
Because meaningful growth requires challenges and stress.

 

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