Grade12 quiz1 revision

Many hollow internal organs such as the stomach, intestine, and bladder are lined with involuntary muscle called?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

Which of the following muscles are classified as voluntary muscle?

• Cardiac muscle

• cardiac and skeletal muscle

• Skeletal muscle

• Smooth muscle

The involuntary muscle present only in the heart is called?

• Cardiac muscle

• Skeletal muscle

• Smooth muscle

Under a microscope, cardiac muscle does not appear striated or striped?

• True

• False

The functional unit of a muscle and the part of the muscle that contracts?

• Tendons

• Biceps

• Sarcomere

The tough bands of connective tissue, that connect muscles to bones is called??

• Joint

• Tendons

• Neuron

During exercise, lactic acids builds up in muscle cells causing fatigue?

• True

• False

A small gap exists between the axon of one neuron and the dendrite of another neuron. This gap is called??

• Neurotransmitter

• Synapse

• Junction

• Tendons

A chemical that diffuses a cross a synapse and binds to receptors on the dendrites of neighbouring neuron is called?

• Hormone

• Enzymes

• Neurotransmitter

The minimum stimulus to cause an action potential to be produced is called??

• Threshold

• Strength

• Response