Anatomy of Skeletal Muscle Flashcards

Questions and Answers

What is the definition of Perimysium?

Connective tissue ensheathing the entire muscle

Contractile unit of the muscle

A muscle cell

Connective tissue surrounding a fascicle (correct)

What is the definition of Epimysium?

Connective tissue ensheathing the entire muscle (correct)

Connective tissue surrounding a fascicle

Thin connective tissue investing each muscle cell

Cordlike extension of connective tissue beyond the muscle

What is the definition of Sarcomere?

Actin- or myosin-containing structure

Contractile unit of the muscle (correct)

Connective tissue surrounding a fascicle

A discrete bundle of muscle cells

What is the definition of Fiber?

A muscle cell Signup and view all the answers

What is the definition of Endomysium?

Thin connective tissue investing each muscle cell Signup and view all the answers

What is the definition of Sarcolemma?

Plasma membrane of the muscle cell Signup and view all the answers

What is the definition of Myofibril?

Actin- or myosin-containing structure Signup and view all the answers

What is the definition of Tendon?

Cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone Signup and view all the answers

What is the definition of Fascicle?

A discrete bundle of muscle cells Signup and view all the answers

Study Notes

Connective Tissues in Skeletal Muscle

Perimysium: Connective tissue that surrounds a group of muscle fibers known as a fascicle, providing support and pathway for nerves and blood vessels.
Epimysium: The outer layer of connective tissue encasing the entire muscle, offering structural integrity and protection.
Endomysium: Delicate layer of connective tissue that surrounds and supports individual muscle fibers, ensuring proper nutrient transfer and mechanical stability.

Muscle Cell Structure

Fiber: A term used to refer to a single muscle cell; essential for muscle contraction and responsible for force generation.
Myofibril: A long, cylindrical structure within a muscle fiber containing the contractile proteins actin and myosin, integral for muscle contraction.

Functional Units of Muscle

Sarcomere: The smallest functional unit of a muscle, defined by the segment between two Z lines; responsible for muscle contraction through the sliding filament mechanism.

Muscle Cell Components

Sarcolemma: The plasma membrane surrounding a muscle cell, crucial for transmitting electrical impulses that initiate contraction.
Fascicle: A discrete bundle of muscle fibers that organizes muscle structure and facilitates coordinated contraction.

Muscle Attachments

Tendon: A fibrous connective tissue that extends from the muscle, anchoring it to the bone, facilitating movement through force transmission.

Description

Test your knowledge of the anatomy of skeletal muscle with these flashcards. Each card features a term related to muscle structure along with its definition. Perfect for students studying anatomy or related fields.