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44 Cards in this Set
- Front
- Back
Human movement system |
The combination and interrelation of the nervous, muscular, and skeletal systems |
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Nervous system |
A conglomeration of billions of cells specifically designed to provide a communication network within the human body |
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Sensory function |
The ability of the nervous system to sense changes in either the internal or external environment |
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Integrative function |
The ability of the nervous system to analyze and interpret sensory information to allow for proper decision making, which produces the appropriate response |
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Motor function |
The neuromuscular response to the sensory information |
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Proprioception |
The cumulative sensory input to the central nervous system from all mechanoreceptors that sense body position and limb movement |
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Neuron |
The functional unit of the nervous system |
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Sensory (afferent) neurons |
Transmit nerve impulses from effector sites (such as muscles and organs) via receptors to the brain and spinal cord |
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Interneurons |
Transmit nerve impulses from one neuron to another |
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Motor (efferent) neurons |
Transmit nerve impulses from the brain and spinal cord to effector sites |
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Central nervous system |
The portion of the nervous system that consists of the brain and spinal cord |
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Peripheral nervous system |
Cranial and spinal nerves that spread throughout the body |
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Mechanoreceptors |
Sensory receptors responsible for sensing distortion in body tissues |
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Muscle spindles |
Receptors sensitive to change in length of the muscle and the rate of that change |
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Golgi tendon organs |
Receptors sensitive to change in tension of the muscle and the rate of that change |
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Joint receptors |
Receptors surrounding a joint that respond to pressure, acceleration, and deceleration of the joint |
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Skeletal system |
The body’s framework, composed of bones and joints |
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Bones |
Provide a resting ground for muscles and protection of vital organs |
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Joints |
Junctions of bones, muscles, and connective tissue at which movement occurs. Also known as an articulation. |
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Axial skeleton |
Portion of the skeletal system that consists of the skull, rib cage, and vertebral column |
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Appendicular skeleton |
Portion of the skeletal system that includes the upper and lower extremities |
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Remodeling |
The process of resorption and formation of bone |
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Osteoclasts |
A type of bone cell that removes bone tissue |
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Osteoblasts |
A type of cell that is responsible for bone formation |
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Epiphysis |
The end of long bones, which is mainly composed of cancellous bone, and house much of the red marrow involved in red blood cell production. They are also one of the primary sites for bone growth |
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Diaphysis |
The shaft portion of a long bone |
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Epiphyseal plate |
The region of long bone connecting the diaphysis to the epiphysis. It is a layer of subdividing cartilaginous cells in which growth in length of the diaphysis occurs |
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Periosteum |
A dense membrane composed of fibrous connective tissue that closely wraps (invests) all bone, except that of the articulating surfaces in joints, which are covered by a synovial membrane |
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Medullar cavity |
The central cavity of bone shafts where marrow is stored |
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Articulate (hyaline) cartilage |
Cartilage that covers the articulated surfaces of bones |
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Depressions |
Flattened or indented portions of bone, which can be muscle attachments sites |
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Processes |
Projections protruding from the bone where muscles, tendons, and ligaments can attach. |
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Vertebral column |
A series of irregularly shaped bones called vertebrae that houses the spinal cord |
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Nonsynovial joints |
Joints that do not have a joint cavity, connective tissue or cartilage |
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Ligament |
Primary connective tissue that connects bones together and provides stability, input to the nervous system, guidance, and the limitation of improper joint movement. |
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Muscular system |
Series of muscles that moves the skeleton |
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Epimysium |
A layer of connective tissue that is underneath the fascia and surrounds the muscle |
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Perimysium |
The connective tissue that surrounds fascicles |
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Endomysium |
The deepest layer of connective tissue that surrounds individual muscle fibers |
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Tendons |
Connective tissues that attach muscle to bone and provide an anchor for muscles to produce force |
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Sarcomere |
The functional unit of muscle that produces muscular contraction and consists of repeating sections of actin and myosin |
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Neural activation |
The contraction of a muscle generated by neural stimulation |
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Motor unit |
A motor neuron and all of the muscle fibers it innervates |
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Neurotransmitters |
Chemical messengers that cross the neuromuscular junction (synapse) to transmit electrical impulses from the nerve to the muscle |