atachments and joints of muscles Flashcards
What is the primary function of muscles in the human body?
To facilitate movement by contracting and exerting force on bones.
True or False: Muscles only attach to bones.
False: Muscles can also attach to skin and other muscles.
Fill in the blank: The point of attachment of a muscle to a stationary bone is called the ______.
origin
What is the term for the point of attachment of a muscle to a moving bone?
insertion
Which type of muscle shape is characterized by a broad origin and a narrow insertion?
convergent
Multiple Choice: Which of the following is NOT a muscle shape classification? A) Circular B) Spiral C) Fusiform D) Irregular
D) Irregular
What muscle shape is known for having fibers that run parallel to the muscle’s long axis?
parallel
True or False: Pennate muscles have fibers that run parallel to the tendon.
False: Pennate muscles have fibers that run at an angle to the tendon.
Fill in the blank: The muscle shape that resembles a feather is called ______.
pennate
What is the primary characteristic of circular muscles?
They are arranged in concentric rings and function to close openings.
Which muscle shape allows for the greatest range of motion?
parallel
What do you call muscles that work in opposition to each other?
antagonistic muscles
True or False: Agonist muscles are those that relax during movement.
False: Agonist muscles are those that contract to produce movement.
Fill in the blank: The muscle that assists the agonist is called a ______.
synergist
What is the term for the muscle that is primarily responsible for a specific movement?
agonist
Multiple Choice: Which of the following shapes has a central belly and tapered ends? A) Circular B) Fusiform C) Pennate D) Convergent
B) Fusiform
What is the attachment site of a muscle that moves during contraction?
insertion
True or False: Muscles can only attach to bones via tendons.
True
Fill in the blank: The ______ is a dense connective tissue that connects muscle to bone.
tendon
What is the role of fascia in relation to muscles?
Fascia provides structural support and separates muscles from each other.
Which muscle shape is typically found in muscles that require high force production?
pennate
Multiple Choice: Which muscle shape has fibers that converge toward a single point? A) Parallel B) Convergent C) Circular D) Pennate
B) Convergent
What do we call the connective tissue that surrounds individual muscle fibers?
endomysium
True or False: The shape of a muscle affects its function and strength.
True
Fill in the blank: The ______ is the connective tissue that surrounds bundles of muscle fibers.
perimysium
What is the primary advantage of pennate muscle arrangement?
Increased force production due to a greater number of fibers per unit area.
Which muscle shape is best suited for rapid and extensive movements?
parallel
