What is the term referring to the synergistic action of muscle groups?
Terms in this set (21) Adduction is a movement back toward the midline of the body in which of the following planes? Frontal plane. Only $2.99/month. What is the term referring to the synergistic action of muscle groups to produce movement around a joint? Force-couple relationship.
What is the term for a force that produces rotation?
The product of the force and the perpendicular distance to the center of gravity for an unconfined object, or to the pivot for a confined object, is^M called the torque or the moment. A torque is also a vector quantity and produces a rotation in the same way that a force produces a translation.
What is a muscle that provides the major force for producing a specific movement?
agonist – (1) The muscle which provides the major force for a particular movement.
What is eccentric motion synonymous?
Two components – eccentric and concentric phase. Eccentric – Muscle develops tension while lengthening. Synonymous with deceleration. Observed in many movements such as landing from a jump.
What is a muscle that provides the major force for producing a specific movement called quizlet?
What is a muscle that provides the major force for producing a specific movement called? an agonist (prime mover)
Which functional group has the major responsibility for producing a specific movement?
Which functional group has the major responsibility for producing a specific movement? [ The prime mover, or agonist, has the major responsibility for producing a specific movement. For example, the biceps brachii muscle is the prime mover of elbow flexion.]
What is the most distinguishing characteristic of muscle tissue?
What is the most distinguishing characteristic of muscle tissue? Its ability to transform chemical energy into mechanical energy.
Which muscle is known as the boxer’s muscle for its ability to move the arm horizontally?
The pec minor assists in drawing the shoulder forward and downward. It also helps to stabilize the shoulder girdle. This muscle is also known as the “boxer’s muscle” because the serratus anterior helps with horizontal arm movement like punching and pushing during horizontal adduction.
What is Boxer’s muscle?
The serratus anterior, also known as the “boxer’s muscle,” is largely responsible for the protraction of the scapula, a movement that occurs when throwing a punch.
Why are biceps and triceps called?
Originally Answered: What are biceps and triceps? “Biceps ” means “2-heads” or “of 2 parts.” “Triceps ”, similarly, means 3 heads or of 3 parts. Your muscles are names like that because they appeared to have 2 or 3 separate muscle origins.
Does the origin of a muscle move?
The origin is the fixed point that doesn’t move during contraction, while the insertion does move. Your bones are the levers and your muscles are the pulley.
What is origin of a muscle?
A muscle has two ends that each attach to bone: the muscle’s origin and the muscle’s insertion. At both of these points, tendons attach the muscle to bone. Muscle origin refers to a muscle’s proximal attachment—the end of the muscle closest to the torso.
What is the difference between a muscle origin and muscle insertion?
A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin. If the place is on the bone that moves during the action, the attachment is called an insertion.
What is the origin insertion and action of muscles?
Conventionally, a muscle origin describes the attachment of a muscle on the more stable bone. The insertion then, is the attachment of a muscle on the more moveable bone. The action of the muscle describes what happens when the more mobile bone is brought toward the more stable bone during a muscular contraction.
Can origin and insertion change within a muscle?
The origin (the one that moves least on contraction) is often proximal, the insertion distal. Often a muscle arises from more than one place: it is then said to have two or more heads (biceps, triceps). In some circumstances origin and insertion can be interchanged, so it is easier to talk of attachments.
How do the nerves and muscles work together?
When you decide to move, the motor cortex sends an electrical signal through the spinal cord and peripheral nerves to the muscles, causing them to contract. The motor cortex on the right side of the brain controls the muscles on the left side of the body and vice versa.
Are nerves attached to muscles?
The neuromuscular system includes all the muscles in the body and the nerves serving them. Every movement the body makes requires communication between the brain and the muscles. The nervous system provides the link between thoughts and actions by relaying messages from the brain to other parts of the body.
What are the 6 Muscle rules?
Terms in this set (6)
- Rule #1. Muscles have two+ attachments and must cross at least one joint.
- Rule #2. Muscles “pull” and get shorter.
- Rule #3. attachment that moves is the insertion.
- Rule #4. Muscles that decrease angle between ventral surfaces are flexors.
- Rule #5. Muscles work in opposing pairs.
- Rule #6.
What are the four rules of muscles?
Rule #1: Muscles must have at least two attachments and must cross at least one joint. Rule #2: Muscles always “pull” and get shorter. Rule #3: The attachment that moves is known as the insertion and the attachment that remains stationary is known as the origin.
What is a striated muscle?
: muscle tissue that is marked by transverse dark and light bands, is made up of elongated usually multinucleated fibers, and includes skeletal muscle, cardiac muscle, and most muscle of arthropods — compare smooth muscle, voluntary muscle.
What is the smallest unit of a muscle?
2.1. The smallest contractile unit of skeletal muscle is the muscle fiber or myofiber, which is a long cylindrical cell that contains many nuclei, mitochondria, and sarcomeres (Figure 1) .
What is the muscle structure from smallest to largest?
Terms in this set (6)
- smallest. myofilament.
- muscle fiber (cell)
What is a unit of muscle?
A motor unit, the functional unit of muscle contraction, is a single motor nerve and the associated muscle fibers that are innervated upon stimulation from the nerve. A collection of motor units is referred to as a motor pool.
What is the functional unit of muscle?
The sarcomere is the functional unit of the muscle fiber. The sarcomere itself is bundled within the myofibril that runs the entire length of the muscle fiber and attaches to the sarcolemma at its end. As myofibrils contract, the entire muscle cell contracts.
What is the functional unit of cell?
A cell can be thought of as a mini-organism consisting of tiny organs called organelles. The organelles are structural and functional units constructed from several macromolecules bonded together.
What is the structural and functional unit of muscle?
– The structural and functional unit of muscle fiber is the sarcomere. – Each myofiber again consists of actin and myosin molecules which help in the muscle contraction.