Questions and Answers
Which muscle straightens the fingers and wrist?
Extensor
Which muscles bend the wrist and close the fingers?
Flexor
The muscle that turns the palm up is the?
Supinator
Drawing the head back, rotating the shoulder blades, and controlling the swing of the arm are functions controlled by the latissimus dorsi and the?
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Which muscles are used when nodding yes or no?
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The coordination of which two muscles enables the body to perform chewing (mastication)?
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What muscle pulls the lower lip down or to the side?
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Raising the upper lip is accomplished by which muscle?
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Which muscle circles the mouth and is responsible for puckering and wrinkling the lips?
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Which muscle is located between the eyebrows across the bridge of the nose and is responsible for drawing down and wrinkling the area across the bridge of the nose?
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What muscle circles the eye socket and closes the eyelid?
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Muscle that controls the eyebrow by drawing them in and downward?
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The epicranius is formed by two muscles called the frontalis and?
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Muscles affected by massage are generally manipulated from?
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What tissue contracts when stimulated to produce motion?
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The non-moving portion of the muscle attached to bone or other fixed muscle is the?
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Which type of muscle is responsible for permitting a person to change the pace from walking to running?
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The muscles that respond to commands regulated by will are referred to as?
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One function of the muscular system includes supporting the?
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The study of muscles is?
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Behind or back of?
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Located above, or is larger?
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Located below, or is smaller?
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Lifts up?
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Draws down or depresses?
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Opens, enlarges or expands?
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In front of?
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Study Notes
Muscle Function and Types
- Extensor: Muscle that straightens fingers and wrist, facilitating the extension of these body parts.
- Flexor: Responsible for bending the wrist and closing fingers, enabling gripping and holding actions.
- Supinator: Muscle that turns the palm upward, crucial for various hand movements.
- Latissimus Dorsi and Trapezius: Control drawing the head back, rotating shoulder blades, and swinging arms.
- Sternocleido mastoideus: Muscles utilized for nodding "yes" or "no".
Chewing and Facial Muscles
- Temporalis and Masseter: These muscles coordinate chewing (mastication), enabling effective food breakdown.
- Quadratus Labii Inferioris: Muscle that pulls the lower lip down or to the side, influencing facial expressions.
- Quadratus Labii Superioris: This muscle raises the upper lip, important for expressions like smiling.
- Oris Orbicularis: Circles the mouth, responsible for puckering and wrinkling the lips.
Eye and Forehead Muscles
- Procerus: Located between eyebrows, it draws down and wrinkles the area across the bridge of the nose.
- Orbicularis Oculi: Circles the eye socket and closes the eyelid, protecting the eyes.
- Corrugator: Muscle that controls eyebrow movement by drawing them in and downward.
Muscle Structure and Physiology
- Epicranius: Comprised of frontalis and occipital muscles, controlling scalp movement.
- Massage techniques manipulate muscles from origin to insertion to optimize relaxation and flow.
- Muscular Tissue: Contracts when stimulated, producing movement throughout the body.
- Origin: Non-moving part of a muscle attached to a fixed bone or muscle.
Muscle Classification
- Voluntary Muscle: Enables the transition from walking to running through conscious control.
- Striated Muscle: Muscles that respond to commands regulated by will, also known as skeletal muscles.
- Skeletal Support: One function of the muscular system is to provide support to the skeletal system.
Terminology
- Myology: The study of muscles, exploring their functioning and structure.
- Posterior: Refers to the back side of the body.
- Superiorous: Describes a position that is above or larger than another structure.
- Inferious: Indicates a position that is below or smaller than another structure.
- Levator: Muscle that lifts up various body parts.
- Depressor: Muscle that draws down or depresses body parts.
- Dialator: Muscle that opens, enlarges, or expands passages.
- Anterior: Describes the front side of the body.
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Description
Test your knowledge on key muscles in Chapter 3 with these flashcards. Learn terms like extensor, flexor, and supinator, and their functions in motion. Perfect for students studying anatomy or preparing for exams.
