Chapter 4 Flashcards
Muscul/o, my/o, myas/o
Muscles. Make body movement possible, hold body erect, move body fluids, produce body heat
Fasci/o
Fascia, fibrous band. Cover, support, separate muscles.
Ten/o, tend/o, tendin/o
Tendons, stretch out, extend, strain. Attach muscles to bones
Bi-
Two, twice, double
-cele
Hernia, tumor, swelling
Dys-
Bad, difficult, painful
Fibr/o
Fibrous tissue, fiber
-ia
Abnormal condition, disease, plural of -ium
-ic
Pertaining to
Kines/o, kinesi/o
Movement
-plegia
Paralysis, stroke
-rrhexis
Rupture
Tax/o
Coordination, order
Ton/o
Stretching, tension
Tri-
Three
Abduction
Movement of a limb away from the midline of the body. Ab- means away, duct means to lead, -ion means action
Adduction
Movement of a limb toward the midline of the body. Ad- means toward, duct means to lead, -ion means action
Adhesion
A band of fibrous tissue that holds structure together abnormally. Can form inmusxles or in internal organs, as the result of an injury or surgery
Ataxia
The lack of muscle coordination during voluntary movement. A- means without, tax means coordination, -ia means condition. These movements, which are often shaky and unsteady, are most frequently caused by abnormal activity in the cerebellum
Atonic
Lacking normal muscle tone or strength. A- means without, ton means tone, -ic means pertaining to
Atrophy
Weakness or wearing away of body tissues and structures. Can be caused by pathology or by disuse of the muscle over a long period of time
Bradykinesia
Extreme slowness in movement. Brady- means slow, kines means movement, -ia means condition. One of symptoms of Parkinson’s disease
Carpal tunnel syndrome
Inflammation and swelling of the tendons that pass through the carpal tunnel, which then create pressure on the median nerve. Carpal tunnel is a narrow, bony passage under the carpal ligament that is located just below the inner surface of the wrist. The median nerve and the tendons that bend the fingers pass through this tunnel
Chronic fatigue syndrome
A delibitating and complex disorder characterized by profound fatigue that is not improved by bed rest and may be made worse by physical or mental activity. CFS, also known as myalgic encephalomyelitis
Circumduction
The circular movement at the far end of a limb
Contracture
The permanent tightening of fascia, muscles, tendons, ligaments
Or skin that occurs when normally elastic connective tissues are replaced with non-elastic fibrous tissues. Most common causes of contracture are scarring or the lack of use due to immobilization or inactivity
Dorsiflexion
Movement that bends the foot upward at the ankle. Pointing the toes and foot upward decreases the angle between the top of the foot and the front of the leg
Dyskinesia
Distortion or impairment of voluntary movement resulting in fragmented or Jerky motions. Dys- means bad, kines means movement, -ia means condition
Dystonia
A condition of abnormal muscle tone that causes the impairment of voluntary muscle movement. Dys- means bad, ton means tone, -ia means condition
Electromyography
A diagnostic test that measures the electrical activity within muscle fibers in response to nerve stimulations. EMG. Electr/o means electricity, my/o means muscle, -graphy means the process of producing a picture or record. Frequently used when people have symptoms of weakness and examination shows impaired muscle strength
Epicondylitis
Inflammation of the tissues surrounding the elbow. Epi- means on, condyl means condyle, -itis means inflammation
Ergonomics
The study of human factors that affect the design and operation of tools and the work environment. Usually applied to the design of equipment and workspaces, with the goal of reducing injuries, strains, and stress
Exercise physiologist
A specialist who works under a physician’s supervision to develop, implement, and coordinate exercise programs, and administer medical tests to promote physical fitness
Fasciitis
Inflammation of a fascia. Fasci means fascia, -itis means inflammation
Fibromyalgia
A debilitating chronic condition characterized by fatigue, diffuse or specific muscle, joint, or bone pain, and a wide range of other symptoms. Fibr/o means fibrous tissue, my means muscle, -algia means pain
Ganglion cyst
A harmless fluid-filled swelling that occurs most commonly on the outer surface of the wrist
Heel spur
A calcium deposit in the plantar fascia near its attachment to the heel bone
Hemiparesis
Slight paralysis or weakness affecting one side of the body. Hemi- means half, -paresis means partial or incomplete paralysis
Hemiplegia
Total paralysis affecting only one side of the body. Hemi- means half, -plegia means paralysis. Usually associated with a stroke or brain damage
Hernia
The protrusion of a part of a structure through the tissues normally containing it
Hyperkinesia
Abnormally increased motor function or activity, also known as hyperactivity. Hyper-means excessive, kines means movement, -ia means condition
Hypotonia
A condition of diminished tone of skeletal muscles. Hypo- means deficient, ton means tone, -ia means condition
Impingement syndrome
Inflammed and swollen tendons are caught in the narrow space between the bones within the shoulder joint. Common symptoms is discomfort when raising your arm above your head
Insertion
The point where the muscle ends by attaching to a bone or tendon. The insertion is the more movable attachment, and it is farthest point from the midline of the body
Intermittent claudication
Pain in the leg muscles that occurs during exercise and is relieved by rest. This condition, which is due to poor circulation, is associated with peripheral vascular disease
Muscular dystrophy
A group of more than 30 genetic diseases that are characterized by progressive weakness and degeneration of the skeletal muscles that control movement, without affecting the nervous system. Two most common forms are duchenne muscular dystrophy and Becker muscular dystrophy
Myasthenia gravis
A chronic autoimmune disease that affects the neuromuscular junction and produces serious weakness of voluntary muscles. Muscles that control eye movement, facial expression, chewing, talking, and swallowing are often affected by this condition.
Myocele
The herniation (protusion) of muscle substance through a tear in the fascia surrounding it. My/o means muscle, -Cele means hernia
Myoclonus
The quick involuntary jerking of a muscle or group of muscles. My/o means muscles, clon means violent action, -us means singular noun ending. May occur normally as a person falling asleep or asthe jerks, shakes, or spasms resulting from a neurological disorder such as epilepsy, a metabolic condition or a response to medication
Myofascial release
A specialized soft-tissue manipulation technique used to ease the pain of conditions such as fibromyalgia, myofascial pain syndrome, movement restrictions, temporomandibular joint disorders, and carpal tunnel syndrome
Myolysis
The degeneration of muscle tissue. My/o means muscle, -lysis means destruction or breaking down in disease
Myoparesis
Weakness or slight muscular paralysis. My/o means muscle, -paresis means partial or incomplete paralysis
Myorrhaphy
Surgical suturing of a muscle. My/o means muscle, -rrhaphy means surgical suturing
Neuromuscular
Pertaining to the relationship between a nerve and muscle. Neur/o means nerve, muscul means muscle, -ar means pertaining to
Oblique
Slated or at an angle. Ex. External oblique and internal oblique muscles have slanted alignment
Origin
The point where the muscle begins, located nearest the midline of the body or on a less movable part of the skeleton
Paralysis
The loss of sensation and voluntary muscle movements in a muscle through disease or injury to its nerve supply
Paraplegia
Paralysis of both legs and the lower part of the body
Physiatrist
A physician who specializes in physical medicine and rehabilitation with the focus on restoring function
Plantar fasciitis
Inflammation of the plantar fascia on the sole of the foot, causing foot or heel pain when walking or running
Polymyositis
A muscle disease characterized by the simultaneous inflammation and weakening of voluntary muscles in many parts of the body. Poly- means many, myos means muscle, -itis means inflammation. The affected muscles are typically those closest to the trunk or torso, and the resulting weakness can be severe
Pronation
The act of rotating the arm or the leg so the palm of the hand or the sole of the foot is turned downward or backward
Quadriplegia
Paralysis of all four extremities. Quadr/I means for, -plegia means paralysis
Sarcopenia
The loss of muscle mass, strength, and function that come with aging. Sarc/o means flesh, -penia means deficiency
Shin splint
A painful condition caused by the tibialis anterior muscle tearing away from the tibia (shin bone). Can develop in the anterolateral ( front and side) muscles or in the posteromedial (back and middle) muscles of the lower leg. Type of injury is usually caused by repeated stress to the lower leg such as running on hard surfaces
Singultus
Also known as hiccups. Myoclonus of the diaphragm that causes the characteristic hiccup sound with each spasm
Sphincter
(Sfink-ter)
A ring-like muscle that tightly constructs the opening of a passageway. Ex. Anal sphincter closes the anus
Sprain
An injury to a joint, such as ankle, knee, or wrist, which usually occurs when a ligament is wrenched or torn
Tenodesis
The suturing of the end of a tendon to a bone. Ten/o means tendon, -desis means to bind or tie together
Tenolysis
The release of a tendon from adhesions. Ten/o means tendon, -lysis means to set free
Tenorrhaphy
The surgical suturing together of the divided ends of a tendon. Ten/o means tendon, -rrhaphy means surgical suturing
Tenosynovitis
An inflammation of the sheath surrounding a tendon. Ten/o means tendon, synov means synovial membrane, -itis means inflammation
Tenotomy
A surgical incision into a tendon. Ten/o means tendon, -otomy means surgical incision
Torticollis
Also known as wryneck. A stiff neck due to spasmodic contraction of the neck muscles that pull the head toward the affected side
Transverse
In a crosswise direction. Ex. Transverse abdominis muscle in the abdomen, has a crosswise alignment
Functions of the muscular system
- muscles hold the body erect and make movement possible
- muscle movement generates nearly 85% of the hear that keeps the body warm
- muscles move food through the digestive system
- muscle movements, such as walking, aid the flow of blood through veins as it returns to the heart
- muscles action moves fluids through the ducts and tube associated with other body systems
Musculoskeletal system
The muscular and skeletal systems. They provide the body with form, support, stability, and the ability to move. Has more than 600 muscles, which make up about 40-45% of the body’s weight. Skeletal fibers are made up of fibers that are covered with fascia and are attached to bones by tendons
Muscle fibers
Long, slender cells that make up muscles. Each muscle consists of a group of fibers that are bound together by connective tissue
Fascia
A band of connective tissue that envelops, separates, or binds together muscles or groups of muscles. (Plural fasciae or fascias). Fascia is flexible to allow muscle movements
Myofascial
Pertaining to muscle tissue and fascia. My/o means muscle, fasci means fascia, -al means pertaining to
Tendon
A narrow band of nonelastic, dense, fibrous connective tissue that attaches a muscle to a bone
Ligaments
Bands of fibrous tissue that forms joints by connecting one bone to another bone
Patellar tendon
Attaches muscles to the bottom of the patella (kneecap)
Achilles tendon
Attaches the gastrocnemius muscle (the major muscle of the calf of the leg) to the heel bone
Aponeurosis
Sheet-like fibrous connective tissue resembling a flattened tendon that connects muscles together or to a bone . (Plural aponeuroses)
Three types of muscular tissue
Skeletal
Smooth
Myocardial
These muscle types are described according to their appearance and function
Skeletal muscles
Attached to the bones of the skeleton and make body motions possible.
Also known as voluntary muscles or striated muscles
Voluntary muscles
Skeletal muscles. We have conscious (voluntary) control over these muscles
Striated muscles
Skeletal muscles. Under a microscope, the dark and light bands in the muscle fibers create a striped appearance
Striated
Striped
Smooth muscles
Located in the walls of internal organs such as the digestive tract, blood vessels, and ducts leading from glands. Their function is to move and control the flow of fluids through these structures.
Also known as involuntary muscles, unstriated muscles, visceral muscles
Involuntary muscles
Smooth muscles, under control of the autonomic nervous system and are not under voluntary control
Unstriated muscles
Smooth muscles that do not have dark and light bands that produce the striped appearance
Visceral muscles
Smooth muscles which are found in hollow structures such as those of the digestive and urinary systems. These muscles are found in large internal organs, with the exception of the heart
Visceral
Relating to the internal organs.
Myocardial muscles
Also known as myocardium or cardiac muscle. Form the muscular walls of the heart. My/o means muscle, cardi means heart, -al means pertaining to. Like striated skeletal muscle in appearance but is similar to smooth muscle in that its action is involuntary. It is the constant contraction and relaxation of the myocardial muscle that causes the heartbeat
Muscle innervation
Stimulation of a muscle by an impulse transmitted by a motor nerve. Motor nerves enable the brain to stimulate a muscle to contract. When the stimulation stops, the muscle relaxes. Motor nerves control the body’s voluntary muscular contractions.
Antagonistic
Working in opposition to each other
Antagonistic muscle pairs
All muscles are arranged in antagonistic pairs. Muscles within each pair are made up of specialized cells that can change length or shape by contracting or relaxing. When one muscle contracts, the opposite muscle of the pair relaxes. Ex. Biceps and triceps
Contraction
Tightening of a muscle. As the muscle contracts, it becomes shorter and thicker, causing the belly (center) of the muscle to enlarge