A&P ch 6 pt 1 – Flashcards
Unlock all answers in this set
Unlock answersquestion
Muscke tissue that has involuntary regulation of contraction is:
answer
Cardiac and smooth muscle
question
The muscke tissue type that consists of single, very long, cylindrical, multinucleate cells with very obvious striations is:
answer
Cardiac and skeletal muscle
question
Which of the following does not describe cardiac muscle tissue?
answer
Attached to bones
question
What type of membrane wraps a fascicle?
answer
Perimysium
question
Which of the following is not a function of the muscular system?
answer
Hematopoiesis
question
Which one of the following is composed of myosin protein?
answer
Thick filaments
question
The axon terminals of a nerve cell and the sarcoma a of a skeletal muscle cell join at the:
answer
Neuromuscular junction
question
Acetylcholine is:
answer
A neurotransmitter that stimulates skeletal muscle
question
The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the:
answer
Synaptic cleft
question
Neurotransmitters are released upon stimulation from a nerve impulse by the:
answer
Axon terminals of the motor neuron
question
During skeletal muscle contraction, myosin cross bridges attach to active sites of:
answer
Actin filaments
question
Which of these events must occur first to trigger the skeletal muscle to generate an action potential and contract?
answer
ACh causes temporary permeability to sodium
question
Which of the following muscle actions would not be classified as an isotonic contraction:
answer
Pushing against a stationary wall
question
Type of movement that decreases the angle of a joint
answer
Flexion
question
Type of movement that results when the forearm rotates laterally so that the palm faces anteriorly
answer
Supination
question
The movement of a limb toward the body midline
answer
Adduction
question
Type of movement that increases the angle of a joint
answer
Extension
question
The movement of a bone around its longitudinal axis
answer
Rotation
question
The movement of a limb away from the body midline
answer
Abduction
question
Type of movement that results when the forearm rotates medially so the palm faces posteriorly
answer
Pronation
