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
Human Anatomy & Physiology
- Skryf n kortkuns van die Egyptians pyramids vertel ñ story. Maximum 500 woordearrow_forward1.)What cross will result in half homozygous dominant offspring and half heterozygous offspring? 2.) What cross will result in all heterozygous offspring?arrow_forward1.Steroids like testosterone and estrogen are nonpolar and large (~18 carbons). Steroids diffuse through membranes without transporters. Compare and contrast the remaining substances and circle the three substances that can diffuse through a membrane the fastest, without a transporter. Put a square around the other substance that can also diffuse through a membrane (1000x slower but also without a transporter). Molecule Steroid H+ CO₂ Glucose (C6H12O6) H₂O Na+ N₂ Size (Small/Big) Big Nonpolar/Polar/ Nonpolar lonizedarrow_forward
- what are the answer from the bookarrow_forwardwhat is lung cancer why plants removes liquid water intead water vapoursarrow_forward*Example 2: Tracing the path of an autosomal dominant trait Trait: Neurofibromatosis Forms of the trait: The dominant form is neurofibromatosis, caused by the production of an abnormal form of the protein neurofibromin. Affected individuals show spots of abnormal skin pigmentation and non-cancerous tumors that can interfere with the nervous system and cause blindness. Some tumors can convert to a cancerous form. i The recessive form is a normal protein - in other words, no neurofibromatosis.moovi A typical pedigree for a family that carries neurofibromatosis is shown below. Note that carriers are not indicated with half-colored shapes in this chart. Use the letter "N" to indicate the dominant neurofibromatosis allele, and the letter "n" for the normal allele. Nn nn nn 2 nn Nn A 3 N-arrow_forward
- I want to be a super nutrition guy what u guys like recommend mearrow_forwardPlease finish the chart at the bottom. Some of the answers have been filled in.arrow_forward9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure below. Use the information below to determine how much ATP will be produced from the glycerol part of the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your total number of ATP produced per lipid. Assume no other carbon source is available. 18 carbons fatty acids 12 carbons 9 glycerol A. Glycerol is broken down to glyceraldehyde 3-phosphate, a glycolysis intermediate via the following pathway shown in the figure below. Notice this process costs one ATP but generates one FADH2. Continue generating ATP with glyceraldehyde-3-phosphate using the standard pathway and aerobic respiration. glycerol glycerol-3- phosphate…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