Concept explainers
Videos
Which type of muscle fascicle pattern has an appearance similar to a feather?
a. Fusiform
b. Triangular
c. Pennate
d. Parallel
Introduction:
The functioning of the skeletal muscles is influenced greatly by the appearance and the structure of the fascicle arrangement. According to this arrangement, there are six fascicle patterns, namely, parallel, convergent, pennate, circular, spiral, and fusiform.
Answer to Problem 1CYR
Correct answer:
The fascicle and muscular fiber patterns of the pennate muscle are attached to a tendon at an angle, which gives it a feather-like apperance.
Explanation of Solution
Justification for the correct answer:
Option (c) is pennate. The fascicle pattern of the pennate muscle resembles a feather as all the fibers of the muscles are attached to a tendon in such a way that it gives the muscle the appearance of a feather. Hence, option (c) is correct.
Justification for incorrect answers:
Option (a) is fusiform. The fusiform muscles do not have a feather-like appearance as they are thick in the middle while the ends are tapered. Hence, it is false because this pattern does not resemble a feather. So, this option is incorrect.
Option (b) is triangular. The triangular muscle fascicle pattern has an appearance similar to that of feather but it is false as the shape of the fascicle pattern is not like that of a feather; the convergent or triangular muscle fascicle pattern is broad at one end and uniformly tapered toward a single tendon. Thus, they are not feather shaped. So, this option is incorrect.
Option (d) is parallel. The parallel muscle fascicle pattern is evenly spaced muscles just as the name implies, and the fascicles are arranged to a tendon that is of the same width; they have the appearance of a strap. Thus, the parallel muscle fascicle pattern does not have a feather-like appearance. So, this option is incorrect.
Hence, options (a), (b), and (d) are incorrect
Thus, it can be concluded that different muscles possess varied muscle fascicle patterns. The pennate muscle fascicular pattern resembles a feather and it has different variations depending on the number of fascicle patterns, like unipennate, bipennate, and multipennate
Want to see more full solutions like this?
Chapter 9 Solutions
Modified Masteringa&p With Pearson Etext -- Standalone Access Card -- For Human Anatomy And Physiology
- answer questions 1-10arrow_forwardAnswer Question 1-9arrow_forwardEx: Mr. Mandarich wanted to see if the color of light shined on a planthad an effect on the number of leaves it had. He gathered a group ofthe same species of plants, gave them the same amount of water, anddid the test for the same amount of time. Only the color of light waschanged. IV:DV:Constants:Control Gr:arrow_forward
- ethical considerations in medical imagingarrow_forwardPlease correct answer and don't used hand raiting and don't used Ai solutionarrow_forward2. In one of the reactions of the citric acid cycle, malate is oxidized to oxaloacetate. When this reaction is considered in isolation, a small amount of malate remains and is not oxidized. The best term to explain this is a. enthalpy b. entropy c. equilibrium d. free energy e. loss of energyarrow_forward
- 18. The citric acid cycle takes place in a. the chloroplasts b. the cytosol c. the inner mitochondrial membrane d. between the two mitochondrial membranes e. the mitochondrial matrix 40 WILarrow_forward8. Most reactions of anaerobic respiration are similar to a. aerobic respiration b. photosynthesis c. lactic acid fermentation d. alcoholic fermentation e. both c and darrow_forward12. Which of the following molecules can absorb light? a. Pigments b. Chlorophyll c. Rhodopsin d. Carotenoids e. All of the abovearrow_forward
- Which of the following proteins or protein complexes is directly required for the targeting of mitochondrial inner membrane multipass proteins, such as metabolite transporters, whose signal sequence is normally not cleaved after import? OA. TIM22 OB. TIM23 C. OXA OD. Mia40 OE SAMarrow_forwardQUESTION 9 An animal cell has been wounded and has a small rupture in its plasma membrane. Which of the following is more likely to happen next? OA. The cell rapidly cleaves by cytokinesis. OB. The rate of receptor-mediati endocytosis is increased. OC. The rate of exocytosis is increased. OD. The rate of pinocytosis is increased.arrow_forwardFor the a subunit of a trimeric G protein, A. a G-protein-coupled receptor GPCR) acts as a guanine nucleotide exchange factor (GEF), whereas a regulator of G protein signaling (RGS) can act as a GTPase-activating protein (GAP). B. a GPCR acts as a GAP, whereas an RGS can act as a GEF. C. both a GPCR and an RGS can act as a GEF. O D. both a GPCR and an RGS can act as a GAP OE. None of the above.arrow_forward
Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning
Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning