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NASM CPT, 2025 > CH 5 (5-10, 15% of the CPT) > Flashcards

CH 5 (5-10, 15% of the CPT) Flashcards

The Nervous, Skeletal, and Muscular Systems

1
Q

Human movement system (HMS)

A

The collective components and structures that work together to move the body: muscular, skeletal, and nervous systems.

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2
Q

Kinetic chain

A

A concept that describes the human body as a chain of interdependent links that work together to perform movement.

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3
Q

Nervous system

A

A network of specialized cells called neurons that transmit and coordinate signals, providing a communication network within the human body.

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4
Q

Neuron

A

A specialized cell that is the functional unit of the nervous system

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5
Q

Nucleus

A

A cellular structure that contains the majority of the cell’s genetic material

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6
Q

Organelle

A

A cellular structure that performs specific functions within a cell

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7
Q

Mitochondrion

A

A cellular structure that uses nutrients to create energy for the cell

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8
Q

Electrolytes

A

Minerals that have an electrical charge to help transmit nerve impulses throughout the body, such as sodium, potassium, and magnesium.

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9
Q

Central nervous system (CNS)

A

A division of the nervous system that includes the brain and spinal cord.

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10
Q

Peripheral nervous system (PNS)

A

Nerves that connect the rest of the body to the central nervous system.

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11
Q

Afferent pathway

A

Sensory pathway that relays information to the central nervous system.

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12
Q

Efferent pathway

A

A motor pathway that relays information from the central nervous system to the rest of the body.

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13
Q

Interneurons

A

Neurons located within the spinal cord and brain that transmit impulses between afferent and efferent neurons.

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14
Q

Mechanoreceptors

A

Specialized structures that respond to mechanical forces (touch and pressure) within tissues and then transmit signals through sensory nerves.

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15
Q

Somatic nervous system

A

Nerves that serve the outer areas of the body and skeletal muscle and are largely responsible for the voluntary control of movement.

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16
Q

Autonomic nervous system

A

A division of the peripheral nervous system that supplies neural input to organs that run the involuntary processes of the body (e.g., circulating blood, digesting food, producing hormones).

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17
Q

Sympathetic nervous system

A

Subdivision of the autonomic nervous system that works to increase neural activity and put the body in a heightened state.

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18
Q

Sensory function

A

Ability of the nervous system to sense changes in either the internal or external environment.

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19
Q

Proprioception

A

The body’s ability to naturally sense its general orientation and relative position of its parts.

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20
Q

Integrative function

A

The ability of the nervous system to analyze and interpret the sensory information to allow for proper decision-making, which produces an appropriate response.

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21
Q

Motor function

A

The neuromuscular (or nervous and muscular systems) response to the integrated sensory information.

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22
Q

Muscle spindles

A

A sensory receptor sensitive to changes in muscular length and the rate of that change

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23
Q

Stretch reflex

A

Neurological signal from the muscle spindle that causes a muscle to contract to prevent excessive lengthening.

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24
Q

Stretch reflex

A

Neurological signal from the muscle spindle that causes a muscle to contract to prevent excessive lengthening.

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25
Golgi tendon organ (GTO
A sensory receptor sensitive to changes in muscular tension and the rate of that change
26
Joint receptors
Receptors located in and around the joint capsule that respond to pressure, acceleration, and deceleration of the joint.
27
Neuroplasticity
The concept that the brain will continually change or grow, re-forming neural pathways
28
Neurocircuitry
The interconnection of neurons in the brain and spinal cord.
29
Motor skills
Specific movements through the coordinated effort of the sensory and motor subsystems.
30
Skeletal system
A description of the bones of the body.
31
Osteoporosis
A condition of reduced bone mineral density, which increases risk of bone fracture.
32
Joint
The site where two bones meet and movement occurs due to muscle contraction
33
Axial skeleton
skull, the rib cage, and the vertebral column.
34
Appendicular skeleton
skeletal system consisting of the arms, legs, and pelvic girdle.
35
Levers
Rigid rods (usually a long bone) where muscles attach
36
Remodeling
The process by which bone is constantly renewed by the resorption and formation of the bone structure.
37
Osteoclasts
Special cells that break down and remove old bone tissue.
38
Osteoblasts
Special cells that form and lay down new bone tissue.
39
Wolff’s law
Scientific explanation of how remodeling (new bone growth) occurs along the lines of stress placed on the bone.
40
Depressions
Flattened or indented portions of bone.
41
Processes
Protruding from the bone where tendons and ligaments can attach.
42
Vertebral column
Bones that house the spinal cord; consists of the cervical, thoracic, and lumbosacral regions.
43
Spinal cord
Bundle of nerves housed within the vertebrae.
44
Intervertebral discs
Fibrous cartilage structures between vertebrae that act as shock absorbers and assist with movement.
45
Neutral Spine
Represents a position in which the vertebrae and associated structures are under the least amount of load and can most optimally support functional movement.
46
Lumbar spine
Composed of the largest segments in the spinal column
47
Thoracic spine
Composed of 12 vertebrae located in the upper and middle back
48
Cervical spine
Forms a flexible framework and provides support and motion for the head
49
Coccyx
Composed of three to five small, fused bones
50
Sacrum
Composed of five vertebrae that fuse together as the body develops
51
Osteokinematics
Movement of a limb that is visible. Bone movement.
52
Arthrokinematics
The description of joint surface movement; consists of three major types: roll, slide, and spin.
53
Synovial joints
A joint with a fluid-filled joint capsule.
54
Nonaxial
A gliding joint that moves in only one plane, either back and forth or side to side.
55
Nonsynovial joints
Joints that have no joint capsule, fibrous connective tissue, or cartilage in the uniting structure. (ex skull)
56
Ligament
A fibrous connective tissue that connects bone to bone.
57
Collagen
A protein found in connective tissue, muscles, and skin that provides strength and structure. It is the most abundant protein in the human body.
58
Elastin
A protein that provides elasticity to skin, tendons, ligaments, and other structures.
59
Growth plate
A specialized cartilage disc located in the epiphysis that is responsible for longitudinal bone growth.
60
What are the most common joints in the human body?
Synovial joints
61
Skeletal muscle
The type of muscle tissue that connects to bones and generates the forces that create movement.
62
Fascia
Connective tissue that surrounds muscles and bones.
63
Epimysium
Inner layer of fascia that directly surrounds an entire muscle, commonly referred to as the “deep fascia.”
64
Fascicles
Largest bundles of fibers within a muscle. Fascicles are surrounded by perimysium.
65
Perimysium
Connective tissue surrounding a muscle fascicle.
66
Endomysium
Connective tissue that wraps around individual muscle fibers within a fascicle.
67
Glycogen
Glucose that is deposited and stored in bodily tissues, such as the liver and muscle cells; the storage form of carbohydrate.
68
Myoglobin
Protein-based molecule that carries oxygen molecules into the muscles.
69
Myofibrils
Contractile components of a muscle cell
70
Myofilaments
The filaments of a myofibril; include actin and myosin.
71
Actin
The thin, stringlike, myofilament that acts along with myosin to produce muscular contraction.
72
Myosin
The thick myofilament that acts along with actin to produce muscular contraction.
73
Sarcomere
The structural unit of a myofibril composed of actin and myosin filaments between two Z-lines.
74
Z-line
The meeting point of each sarcomere.
75
Neural activation
The nervous system’s signal that tells a muscle to contract.
76
Neuromuscular junction
The specialized site where the nervous system communicates directly with muscle fibers.
77
Synapse
A junction or small gap between the motor neuron and muscle cells.
78
Motor unit
A motor neuron and all of the muscle fibers that it innervates.
79
Action potential
Nerve impulse that is relayed from the central nervous system, through the peripheral nervous system, and into the muscle across the neuromuscular junction.
80
Neurotransmitters
Chemical messengers that cross the synapse between neuron and muscle and assist with nerve transmission.
81
Acetylcholine (ACh)
A neurotransmitter that helps the action potential cross the synapse into the muscle, which initiates the steps in a muscle contraction.
82
Sliding filament theory
The series of steps in muscle contraction involving how myosin (thick) and actin (thin) filaments slide past one another to produce a muscle contraction, shortening the entire length of the sarcomere.
83
Excitation-contraction coupling
The physiological process of converting an electrical stimulus to a muscle contraction.
84
Power stroke
The myosin heads bind to actin and pull them toward the sarcomere center, which slides the filaments past each other, shortening the muscle.
85
Adenosine triphosphate (ATP)
A high-energy molecule that serves as the main form of energy in the human body; known as the energy currency of the body.
86
Resting length
The length of a muscle when it is not actively contracting or being stretched.
87
Type I muscle fibers
Muscle fibers that are small in size, generate lower amounts of force, and are more resistant to fatigue.
88
Type II muscle fibers
Muscle fibers that are larger in size, generate higher amounts of force, and are faster to fatigue.
89
All-or-nothing principle
Motor units cannot vary the amount of force they generate; they either contract maximally or not at all.
90
Capillaries
The smallest blood vessels and the site of exchange of elements between the blood and the tissues.

NASM CPT, 2025 (10 decks)

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