Muscles + Cardio

The basic properties of a muscle are

• Excitability, Contractility, Extensibility, Elasticity

• Contractility, Flexibility, Motion, Shape

• Multinucleated, Striated, Voluntary, Elastic

• Excitability, Type, Function, Elasticity

Active sites on actin become available for binding when

• Actin binds to troponin

• Troponin binds to tropomyosin

• Calcium binds to troponin

• Calcium binds to tropomyosin

Muscle stem cells are known as

• Sarcomeres

• Myosatellite cells

• Myocytes

• Muscular regenerator cells

The theory that explains muscle contraction is formally known as the _________.

• Sliding filament theory

• Muscle contraction theory

• Striated voluntary muscle theory

• Rotating myosin head theory

Which type of muscle fiber arrangement is this?

• Pennate

• Parallel

• Circular

• Convergent

A muscle that provides the major force for producing a specific movement is called a(n)

• Synergist

• Agonist

• Antagonist

• Fixator

The is a layer of dense irregular connective tissue surrounding the entire skeletal muscle is the

• Epimysium

• Perimysium

• Endomysium

• Fascicle

What is the correct path through the circulatory system which describes the passage of blood originating in the left leg?

• Vena cava → left atrium → right atrium → lungs → left ventricle → right ventricle → aorta

• Vena cava → right atrium → left atrium → lungs → right ventricle → left ventricle → aorta

• Vena cava → left atrium → left ventricle → lungs → right atrium → right ventricle → aorta

• Vena cava → right atrium → right ventricle → lungs → left atrium → left ventricle → aorta

All the veins of the systemic circulation eventually drain into the

• Superior vena cava

• Inferior vena cava

• Coronary sinus

• Superior and inferior vena cava

• Superior and inferior vena cava and coronary sinus

The arteries that directly feed into the capillary beds are called

• Muscular arteries

• Elastic arteries

• Arterioles

• Venules