Chapter 5:Human Anatomy And Physiology Flashcards
True or False: Muscles comprise 50 to 75 percent of the total body weight
False 40 to 60
True or False: The action of muscle cells produce nearly all the movement of the body
True
True or False: Irritability is the ability of the muscle to stretch
False
True or False: Skeletal muscle tissue is supplied with a vast network of blood and lymph vessels and capillaries and nerve fibers
True
True or False: Superficial fascia covers the entire muscular system
True
True or False: Muscle cells are unique in that they have only one nucleus
False multi-nucleus
True or False: There are a few specialized muscle cells called spindle cells that have both sensory and motor functions
True
True or False: Larger muscles have the same number of muscle fibers as smaller muscles, and they have more intricate muscles motor units
False
True or False: There is only enough ATP stored in the muscle cells to sustain a contraction for a few seconds
True
True or False: Skeletal muscles have a least one end of the muscle that is attached to bone
True
The skeletal muscular system consists of over \_\_\_ large and small muscles A. 600 B. 800 C. 1000 D. 1200
600
\_\_\_ muscles are governed by the central nervous system and appear striated or striped under the microscope A. Cardiac B. Skeletal C. Smooth D. All of the above
Skeletal
\_\_\_ muscle is composed of the cells that are distinctly striated, are quadrangular, joined end to end, and grouped in bundles supported by a framework of connective tissue A. Cardiac B. Skeletal C. Smooth D. None of the above
Cardiac
\_\_\_ muscles are controlled by the autonomic nervous system. They consist of spindle-shaped non-striated cells that overlap at the ends, often forming fibrous bands. They can maintain a contraction for a long time, and they do not fatigue easily. A. Cardiac B. Skeletal C. Smooth D. All of the above
Smooth
All of the following are characteristics of muscles EXCEPT \_\_\_\_ A. Irritability B. Protractility C. Contractility D. Extensibility
Protractility
All of the following are characteristics of muscles EXCEPT A. Irritability B. Protractility C. Contractility D. Extensibility
B. Protractility
The muscle cell has a connective tissue covering called the \_\_\_\_the maintains its parallel position with other cells. A. Perimysium B. Epimysium C. Endomysium D. Genomysium
C. Endomysium
\_\_\_ connect muscle to bones A. Tendons B. Ligaments C. Fascia D. Cartilage
A. Tendons
A(n) \_\_\_\_\_ is the smallest functional unit of the muscle fiber. A. Neuron B. Microfiber C. Sarcomere D. Andomere
C. Sarcromere
The site where the muscle fiber and nerve fiber meet is called the \_\_\_\_. A. Musculoneural junction B. Efferent/afferent junction C. Neurotransmitter site D. Neuromuscular junction
D. Neuromuscular junction
The energy for the muscle contraction comes from the breakdown of the \_\_\_\_ molecule. A. ATP B. ADP C. AMP D. DPM
A. ATP
\_\_\_\_ results either because the circulation of blood cannot keep pace with the demand for oxygen or because the waste products accumulate faster than they can be removed, affecting the muscles ability to respond to nerve impulses. A. Muscles tone B. Muscles strength C. Muscles fatigue D. None of the above
C. Muscle fatigue
\_\_\_\_ have a relatively slower contraction time and high resistance to fatigue. A. Type I fast twitch fibers B. Type I slow twitch fibers C. Type II fast twitch fibers D. Type II slow twitch fibers
B. Type I slow twitch fiber
The white breast meat of chicken is made of \_\_\_\_ muscle fibers. A. Type I B. Type II C. Type Ia D. Type IIb
A. Type I
\_\_\_\_ muscle fibers provide on-demand, powerful, explosive contractions. These fibers tend to be larger with more actin/myosin filaments but fewer mitochondria and less blood supply. A. Type I B. Type II C. Type III D. Type IV
B. Type II
Muscles support the body against gravity and are made up of higher proportion of Type I fibers. A. Phasic B. Gravitational C. Orthostatic D. Postural
A. Phasic
The place the muscle is anchored to a relatively immovable section of the skeleton is called the place of \_\_\_\_. A. Attachment B. Origin C. Insertion D. Insertion
B. Origin
The \_\_\_\_\_ point of the muscle is generally attached to more distal aspect of an appendage. A. Attachment B. Origin C. Insertion D. None of the above
C. Insertion
When a muscle contracts and the ends of the muscle do not move or the body part that the muscle affects does not move, the contraction is considered an \_\_\_\_\_contraction. A. Isometric B. Isotonic C. Isotoner D. Isocentric
A. Isometric
When the distance between the ends of the contracting muscle decreases, the isotonic contraction is said to be \_\_\_\_. A. Isometric B. Isotonic C. Concentric D. Eccentric
C. Concentric
When you do a push-up what muscle action occurs? A. Eccentric B. Isotonic C. Concentric D. All of the above
D. All of the above
When an isolated and specific action occurs, the muscle responsible for that action is called the\_\_\_. A. Synergist B. Antagonist C. Agonist D. Fixator
C. Agonist
When a prime mover contract, there is a muscle that causes the opposite action. It is called the \_\_\_\_\_. A. Synergist B. Antagonist C. Agonist D. Fixator
B. Antagonist
Muscles that assist the prime mover are called \_\_\_\_. A. Antagonists B. Agonists C. Fixator D. Synergists
D. Synergists
What is the primary function of the biceps? A. Flex the elbow B. Extend the elbow C. Rotate the elbow D. Adduct the elbow
A. Flex the elbow
A \_\_\_ is a sudden involuntary contraction of a muscle or a group of muscles. A. Strain B. Sprain C. Spasm D. Tear
C. Spasm
Muscles \_\_\_\_ is/are the most common injury to muscles. A. Sprains B. Strains C. Atrophy D. Spasms
B. Strains
The majority of muscle strains (80 percent) occur to the muscle \_\_\_ or at the junction between the muscle and the tendon. A. Insertion B. Origin C. Belly D. Back
C. Belly
Muscle \_\_\_\_\_ is an enlargement of the breadth of a muscle as a result of repeated forceful muscle activity. A. Strain B. Hypertrophy C. Atrophy D. Spasms
B. Hypertrophy
Massage directly on the site a(n) \_\_\_\_ cramp or charley horse is contraindicated. A. Acute B. Tonic C. Clonic D. Subacute
A. Acute
\_\_\_\_ are shortened, contracted muscles or muscle groups where the muscle atrophied and shrinks while the connective tissue thickens. A. Fracture B. Cramps C. Contracture D. Strains
C. Contractures
If a muscle cannot be contracted or is only contracted very weakly, the muscle tissue will rapidly degenerate and begin to waste away. This is called muscle\_\_\_\_. A. Hypertrophy B. Sclerosis C. Atrophy D. Dystrophy
C. Atrophy
\_\_\_\_ is chronic inflammatory disease of the connective tissue that may affect many body tissues and organs. A. Tenonitis B. Fibromyalgia C. Lupus erythematosus D. Muscular dystrophy
C. Lupus erythematosus
\_\_\_\_\_ is characterized by pain, fatigue, and stiffness in the connective tissue of the muscles, tendons, and ligaments. A. Tendonitis B. Fibromyalgia C. Lupus erythematosus D. Muscular dystrophy
B. Fibromyalgia
List and briefly describe the three types of the muscular tissue.
- Voluntary-controlled by central nervous system
- Involuntary-controlled by the autonomic nervous system
- Cardiac- striated muscle, involuntary nerves
Explain what gives skeletal muscles their striped appearance.
The striped appearance is due to the arrangement of actin and myosin filaments
Briefly explain how muscles contract
Sliding filament theory is when the actin slides across the myosin filaments when contracting
Briefly explain how muscles contract
Muscles contract because the sarcolema reticulum releases calcium ions causing the actin the slide across the myosin filaments
Briefly describe oxygen debt
Oxygen debt is when lactic acid is created due to lack of ATP
List four Phasic muscles and four postural muscles
Phasic: deltoid, Rhomboids, hamstrings, Serratus anterior
Postural: upper trapezius, Soleus, gastrocnemius, latissimus dorsi
Describe the preferred intervention during the acute stage of a muscle strain
Price: protect, rest, ice, central, elevate
Describe the condition called muscular dystrophy, including characteristics and considerations for massage therapists
Pain, fatigue, stiffness of the muscles.
Massage would be contraindicatated