Podcast
Questions and Answers
What is the root word for muscle?
What is the root word for muscle?
Which of the following are functions of skeletal muscle? (Select all that apply)
Which of the following are functions of skeletal muscle? (Select all that apply)
Skeletal muscles are not considered organs.
Skeletal muscles are not considered organs.
False
What are the structures called that surround each muscle fiber?
What are the structures called that surround each muscle fiber?
Signup and view all the answers
The cord of dense regular connective tissue that attaches skeletal muscle to bone is called a ______.
The cord of dense regular connective tissue that attaches skeletal muscle to bone is called a ______.
Signup and view all the answers
What term describes the primary muscle responsible for a specific movement?
What term describes the primary muscle responsible for a specific movement?
Signup and view all the answers
What is the role of a fixator in muscle movement?
What is the role of a fixator in muscle movement?
Signup and view all the answers
The same muscle can only act as a prime mover in one movement.
The same muscle can only act as a prime mover in one movement.
Signup and view all the answers
Study Notes
Myology
- The study of muscles
- Roots:
- Myo
- Mys
- Sarco
Muscular System Functions
- Movement of skeleton and skin
- Posture and body position
- Supporting and protecting soft tissues
- Abdominal muscles
- Gatekeepers at entrances and exits
- Voluntary sphincters
- Generating body heat
- Amino acid reserve
- During times of need
- Glycemic control
Skeletal Muscles are Organs
- Contain:
- Muscle tissue
- Connective tissues
- Blood vessels
- Nerves
Skeletal Muscle Structure
- Muscle fiber
- Muscle cell
- Multinucleated
- Endomysium
- Surrounds each muscle fiber
- Contains:
- Fine areolar connective tissue
- Capillaries
- Terminal branches of axons (neurons)
- Myosatellite cells
Skeletal Muscle Structure cont.
- Fascicles
- Bundles of muscle fibers
- Surrounded by perimysium
- Perimysium
- Fibrous connective tissue sheath
- Contains blood vessels and neurons
Skeletal Muscle Structure cont.
- Epimysium:
- Dense irregular connective tissue
- Sheath surrounding the entire muscle
Skeletal Muscle Structure
- Endomysium, perimysium, and epimysium are all connected to the tendon, aponeurosis, or direct attachment
Functional Groups of Muscles
- Agonists: Prime mover, responsible for specific movement
- Antagonists: Opposes movement of agonist, controls motion
- Synergists: Help prime movers by:
- Adding extra force
- Stabilizing joint
- Reducing unnecessary movement
- Fixator: Stabilizes bone or muscle's origin to prevent movement
Functional Groups of Muscles cont.
- One muscle can act a prime mover, antagonist, or synergist for different movements.
Muscle Connections
- Direct or indirect
Connecting Structures: Indirect Connections
- Tendon
- Connects skeletal muscle to bone
- Cord of dense regular connective tissue
- Aponeurosis
- Connects muscles to:
- Other muscles
- Bones
- Wide area of attachment
- Tendinous sheet of dense regular connective tissue
- Connects muscles to:
Connecting Structures: Direct Connection
- Epimysium fused to attachment site
- Fibrous collagen
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz delves into the study of muscles, focusing on myology and the structural components of skeletal muscles. It covers muscle functions, tissue types, and important anatomical terms related to muscle physiology. Test your knowledge on muscle fibers, connective tissues, and their roles in the muscular system.
