BIOS 252 MIDTERM Exam 2

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BIOS 252 MIDTERM Exam 2

• What are the 4 properties of muscle tissue?

–Answer excitability, contractility, extensi- bility, elasticity

• What are the types of muscular tissue?

–Answer skeletal, cardiac, smooth

• What is the function of skeletal muscle?

–Answer movement of bones, posture

• What is the function of cardiac muscle?

–Answer pump blood throughout the body

• What is the function of smooth muscle?

–Answer contraction

• What are connective tissue components?

–Answer epimysium, perimysium, endomy- sium

• Fibers found in connective tissue

–Answer collagen, elastic, reticular

• function of connective tissue

–Answer bind, support, protect, fill spaces, store fat, produce blood cells

• skeletal muscle

–Answer striated and voluntary 1 / 2

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• cardiac muscle

–Answer Involuntary muscle tissue found only in the heart, and striated

• smooth muscle

–Answer Involuntary muscle found inside many internal organs of the body, and no striations

• sliding filament theory

–Answer theory that actin filaments slide toward each other during muscle contraction, while the myosin filaments are still

• twitch contraction

–Answer the brief contraction of all the muscle fibers in a motor unit in response to a single action potential in its motor neuron

• frequency of stimulation

–Answer the higher the frequency, the greater the force

• isotonic contraction

–Answer muscle shortens because muscle tension exceeds load

• isometric contraction

–Answer Muscle contracts but there is no movement, muscle stays the same length

• origin

–Answer attachment to stationary bone

• Insertion

–Answer attachment to movable bone

• lever system
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