Muscle Contraction Worksheet Form PDF Details

The Muscle Contraction Worksheet serves as an educational tool designed to guide students through the intricacies of muscle contractions via an internet investigation. By directing learners to a web-based resource and prompting them to explore the workings of skeletal muscle cells, this form embodies a practical approach to learning. It starts with identifying a muscle cell, delves into the composition of muscle fibers, and gradually unveils the structures and functioning of muscle fiber and sarcomeres. The worksheet not only quizzes students on the various components and their roles within a muscle contraction but also introduces the historical context by mentioning the scientists who contributed to the understanding of muscle mechanics. Alongside the structured exploration, students are asked to engage with diagrams, match descriptions to the correct structures, and sequence the events that lead to muscle contraction. This interactive process emphasizes visual learning, understanding of scientific vocabulary, and critical thinking, as students must apply what they have learned to identify and order the mechanisms behind muscle contractions, highlighting the contributions of Ca2+ and ATP in this biological process.

QuestionAnswer
Form NameMuscle Contraction Worksheet Form
Form Length3 pages
Fillable?Yes
Fillable fields53
Avg. time to fill out11 min 21 sec
Other namesmuscle contraction worksheet answer key, internet investigation muscle contraction worksheet, internet assignment muscle contraction worksheet answers, internet investigation contraction worksheet

Form Preview Example

Name: ________________________

Date: _______________ Per: _____

Internet Investigation: Muscle Contraction Worksheet

Type in the following web address, or go to the class webpage and click on the link http://www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animatio ns/muscles/muscles.html

Answer the following questions as you progress through the lesson.

1.A ___________________ is a single skeletal muscle cell.

2.Muscle fibers are made up of fiber bundles that contain hundreds of _______________.

3.Identify the structures of the muscle fiber below by using the words provided. You may write the whole word or just the letter.

A

B

C

D

E

F

G

H

I

4.Match the descriptions with the correct muscle fiber structure. Use the words above, and put the letter on the line next to the matching description. (Not all words will be used)

______ i. Composed of a T-tubule, the terminal cisternae, and gaps.

______ ii. Cylindrical structures that carry out contraction

______ iii. Extensions of the sarcolemma that separate the sarcomeres

______ iv. Specialized plasma membrane of the skeletal muscle cell; forms membrane connections between each of the sarcomeres.

______ v. The specialized endoplasmic reticulum of the skeletal muscle cell

______ vi. Units of the myofibrils

5.Identify the parts of the sarcomere below by using the words provided. You may write the whole word or just the letter.

A

B

C

D

6.Match the descriptions with the correct sarcomere part. Use the words above, and put the

letter on the line next to the matching description. (Not all words will be used)

______ i. The bands that mark the sarcomere’s borders

______ ii. The bands that mark the middle of the sarcomere

______ iii. Under a micrograph, they are the lightest and least dense structures; composed of actin, troponin, tropomyosin

______ iv. Much more dense than thin filaments; composed of myosin

Name: ________________________

Date: _______________ Per: _____

7.Who were the contributing scientists that discovered how muscle contraction worked?

8.The distance between the ends of the thin filaments was known as ______________.

9.The distance between the thick filaments of one sarcomere and the thick filaments of an adjacent sarcomere was known as the _____________.

10.The length of the thick filaments was known as the _______________.

11.Identify the areas in the following picture below 1______________

2______________

3______________

12

3

12.The ____________ and ___________ shortens, but the ____________ does not shorten during muscle contraction.

13.Chemically, muscle contraction is driven by ______________________ and triggered by the release of _______ from the sarcoplasmic reticulum.

14.Ca2+ binds to ____________________ in the thin filaments, exposing the myosin binding sites on actin.

15.The movement where the myosin head pulls the thin filaments inward is called the

________________________.

16.Place the following events in order by placing a number (1-6):

_______ Power stroke (ADP and P dissociate from myosin).

_______ Thin filament returns to relaxed state

_______ Ca2+ binds troponin causing a conformational change of the thin filament

_______ Myosin heads bind to actin

_______ Electrochemical signal causes release of Ca2+ from sarcoplasmic reticulum

_______ ATP binds myosin head

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