Nervous system and nerves

What are the two main parts of the Central Nervous System?

• Brain and Heart

• Spinal Cord and Nerves

• Brain and Spinal Cord

• Brain and Muscles

Which system is represented in the picture?

• Central Nervous System

• Peripheral Nervous System

• Cardiovascular System

• Respiratory System

What is the primary function of nerves in the human body?

• To provide structural support to the body

• To act as messengers carrying information from one part of the body to another

• To transport nutrients

• To produce hormones

What are nerves primarily made up of?

• Blood vessels

• Muscle fibers

• Bundles of nerve fibers or nerve cells called neurons

• Cartilage

Where can the longest nerve in your body be found?

• From your neck to your lower back

• From your hand to your shoulder

• From your big toe to the middle part of your spine

• From your elbow to your wrist

What is the primary function of neurons as described in the image?

• To provide structural support to the brain

• To carry electrical messages called nerve impulses

• To protect the brain from injuries

• To supply nutrients to the brain

What part of the neuron is responsible for receiving incoming signals from other neurons?

• Nucleus

• Soma

• Dendrite

• Axon Terminal

Which part of the neuron is depicted as being covered by the myelin sheath in the diagram?

• Dendrite

• Soma

• Axon

• Nucleus

What is the function of the myelin sheath in a motor neuron?

• To speed up the transmission of nerve impulses along the axon

• To connect the neuron to the muscle

• To produce neurotransmitters

• To receive signals from other neurons

What is the primary function of sensory neurons?

• They carry messages from the CNS to the muscles and glands.

• They link other neurons together within the CNS.

• They carry messages from the body to the CNS.

• They stimulate muscle contractions directly.