Name:
Date:
House:
Teacher:
Day Two: Laboratory
DO NOW
Directions: Try to recall as many of the muscular terms and concepts we learned yesterday as you can.
Parts of a Muscle
Directions: Identify as many parts of a muscle as you can in the diagram below.
Contraction Types
Mr. Shah’s 7th Grade Science Class | Page 1
I DO: Muscular Disorders
Directions: Organize notes about the most common disorders and diseases of the muscular system.
Muscular Dystrophy
Classification
Signs and Symptoms
Diagnosis
Treatment
Preventable?
Curable?
Manageable?
Myasthenia Gravis
Classification
Signs and Symptoms
Diagnosis
Treatment
Preventable?
Curable?
Manageable?
Myotonia Congenita
Classification
Signs and Symptoms
Diagnosis
Treatment
Preventable?
Curable?
Manageable?
Tendonitis
Classification
Signs and Symptoms
Diagnosis
Treatment
Preventable?
Curable?
Manageable?
Mr. Shah’s 7th Grade Science Class | Page 2
WE DO: Basal Metabolic Rate
Basal Metabolic Rate (BMR) is used to measure how much energy your body needs and uses to carry out its basic
functions at rest. From pumping blood, to breathing, to sending signals in the nervous system, to fighting diseases, to
muscle movement, mitochondria are working hard to provide the energy needed to keep you alive and operational. This
energy is measured in terms of calories, and when used, can be restored by eating food.
Once BMR is calculated, we may still need additional calories based on our daily needs. Many factors can influence BMR:
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Genetics
Gender
Age
Muscle mass
Body temperature
Exercise
Directions: Follow the steps below to calculate your own BMR.
1. Define the following variables according to your own measurements:
a = weight in pounds
b = height in inches
c = age
2. Plug these variables into the Harris Benedict Equation and solve to calculate your BMR.
BMR = 66 + (6.23 x a) + (12.7 x b) – (6.8 x c)
My BMR =
Mr. Shah’s 7th Grade Science Class | Page 3
YOU DO: Calorie Counting
Activity Level
In the space below, calculate your daily calories
Daily Calories Needed needed based on your activity level and BMR.
Sedentary
BMR x 1.2
Light Exercise (1-3 days/week)
BMR x 1.375
Moderate Exercise (3-5 days/week)
BMR x 1.55
Intense Exercise (6-7 days/week)
BMR x 1.725
Very Intense Exercise (2/day)
BMR x 1.9
Daily Calories Needed: _____________
1. Assume you eat three meals a day, plus a few snacks in between. How many calories would you budget for
each of these meals? Remember, these must add up to your Daily Calories Needed.
Calories for Breakfast
Calories for Lunch
Calories for Dinner
Calories for Snacks
The table to the left shows the
number of calories in many
common fast food items. Which of
these food items would fit into your
caloric budget?
Mr. Shah’s 7th Grade Science Class | Page 4
Name:
Date:
House:
Teacher:
EXIT TICKET
Directions: Jill Rothman, a 26-year-old gymnastics instructor, presents with complaints of muscle weakness in her face
that comes and goes, but has been getting worse over the past two months. Most notably, she complains that her "jaw
gets tired" as she chews and that swallowing has become difficult. She also notes diplopia ("double vision") which seems
to come on late in the evening, particularly after reading for a few minutes. At work, it has become increasingly difficult
to "spot" her gymnasts during acrobatic moves because of upper arm weakness. On physical examination, she has
notable ptosis ("drooping") of both eyelids after repeated blinking exercises. When smiling, she appears to be snarling.
Diagnose the patient with one of the muscle disorders below.
Muscular Dystrophy
Myasthenia Gravis
Myotonia Congenita
Tendonitis
Then, explain your answer using the R.A.G.E. method. Your evidence should relate to bone and body mass.
Mr. Shah’s 7th Grade Science Class | Page 5