Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The plasma membrane of a muscle cell is called the sarcoplasmic reticulum.
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Ch. 10 Muscle Tissue and Physiology
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 10, Problem 1
Which type of muscle fascicle pattern has an appearance similar to a feather?
a. Fusiform
b. Triangular
c. Pennate
d. Parallel
Verified step by step guidance1
Understand the concept of muscle fascicle patterns: Muscle fascicle patterns refer to the arrangement of muscle fibers within a muscle. These patterns influence the muscle's function and range of motion.
Learn about the different types of fascicle patterns: Fusiform muscles are spindle-shaped with a central belly, triangular muscles are fan-shaped, pennate muscles have fibers arranged at an angle to a central tendon resembling a feather, and parallel muscles have fibers running parallel to the muscle's long axis.
Focus on the pennate fascicle pattern: Pennate muscles are characterized by their feather-like appearance. The fibers are obliquely attached to a central tendon, which can be unipennate (fibers on one side of the tendon), bipennate (fibers on both sides of the tendon), or multipennate (multiple tendons with fibers attached at various angles).
Compare the options provided: Analyze the descriptions of fusiform, triangular, pennate, and parallel patterns to identify which one matches the feather-like appearance.
Conclude that the correct answer is the fascicle pattern resembling a feather, based on the anatomical description of pennate muscles.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Muscle Fascicle Patterns
Muscle fascicle patterns refer to the arrangement of muscle fibers within a muscle. These patterns influence the muscle's strength, range of motion, and overall function. Understanding these arrangements is crucial for identifying how muscles contract and generate force.
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Fascicle Arrangements
Pennate Muscle Arrangement
Pennate muscles are characterized by their feather-like structure, where the fascicles are arranged at an angle to the tendon. This arrangement allows for a greater number of fibers in a given area, enhancing the muscle's strength and force production, but often at the expense of range of motion.
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Types of Muscle Arrangements
There are several types of muscle arrangements, including fusiform, triangular, pennate, and parallel. Each type has distinct characteristics that affect muscle function. Recognizing these types is essential for understanding how muscles work in various movements and activities.
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