FrontalCortex, Inc. is a non-profit corporation dedicated to neurology education.

Type I Muscle Fibers

Topic: Physiology

Created on Sunday, November 9 2008 by jdmiles

Last modified on Sunday, November 9 2008.

Which of the following statements about type I muscle fibers is most accurate?

 
        A) They are the darker-stained fibers on a basic ATPase stain of skeletal muscle
 
        B) They have a higher capacity for anaerobic metabolism than type II fibers
 
        C) They comprise the "white meat" in your Thanksgiving turkey
 
        D) They contain more mitochondria than type II fibers
 
        E) They contain about the same number of mitochondria as type II fibers
 

 


Back to the question = Go back to the top of the page.
See another question like this one = Reload a different version of this question ().
Click here for a random question = Load a random question from the database.
Clone this question = Use this question as a template to create a totally NEW question.
Rate this question = Enter detailed rating for this question!
Average user rating for this question = 4 = How users like you have rated this question.
This question was created on November 09, 2008 by jdmiles.
This question was last modified on November 09, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) they are the darker-stained fibers on a basic ATPase stain of skeletal muscle

This answer is incorrect.


Type I muscle fibers are the lighter-stained fibers on a pH 9.4 (basic) ATPase stain of skeletal muscle. Although in the basic stain, type I fibers may still appear fairly dark, type II fibers appear even darker in this staining technique.
Reload this question to learn more stuff about muscle fiber types.  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




B) they have a higher capacity for anaerobic metabolism than type II fibers

This answer is incorrect.


Type II muscle fibers have a higher capacity for oxidative metabolism than type II fibers, which have a higher capacity for anaerobic metabolism.

Reload this question to learn more stuff about muscle fiber types.  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




C) they comprise the "white meat" in your Thanksgiving turkey

This answer is incorrect.


Type I muscle fibers are redder in color, whereas type II muscle fibers are whiter in color. This corresponds somewhat to the "white meat" and "dark meat" seen in poultry.
Reload this question to learn more stuff about muscle fiber types.  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




D) they contain more mitochondria than type II fibers

This answer is correct.


Type I fibers contain more mitochondria than type II fibers.
Reload this question to learn more stuff about muscle fiber types.  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




E) they contain about the same number of mitochondria as type II fibers

This answer is incorrect.


Type I fibers contain more mitochondria than type II fibers.
Reload this question to learn more stuff about muscle fiber types.  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

 

 

 

References:

1. Preston, D.C., and Shapiro, B.E. (2005). Electromyography and Neuromuscular Disorders: Clinical-Electrophysiologic Correlations, 2nd Edition. Elsevier, Philadelphia. (ISBN:075067492X)Advertising:
2. Nizar Souayah, Sami Khella. Neurology: McGraw-Hill specialty board review: examination & board review. New York : McGraw-Hill, Medical Pub. Division, c2005. (ISBN:0071378391)Advertising:
3. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier Churchill Livingstone, Philadelphia. (ISBN:0443066582)Advertising:
Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 4
Please log in if you want to rate questions.

 

FrontalCortex.com -- Neurology Review Questions -- Neurology Boards -- Board Review -- Residency Inservice Training Exam -- RITE Exam Review
physiology
Type I Muscle Fibers
Question ID: 110908126
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 11/09/2008
Modified: 11/09/2008
Estimated Permutations: 5140800

User Comments About This Question:

0 user entries
Please log in if you'd like to add a comment.