IGCSE - Nervous control in humans

Which is the correct sequence of the components of a reflex arc

• Receptors, spinal cord,sensory neuron, motor neuron, muscle

• Receptors, muscle, sensory neuron, motor neuron, spinal cord

• Receptors, sensory neuron, spinal cord, motor neuron, muscle

• Receptors, motor neuron, spinal cord, sensory neuron, muscle

Which is not a reflex action

• Swallowing

• Coughing

• Knee jerk

• Closing of eyes on flashing light

The microscopic gap between two adjacent neurons throgh which a nerve impulse passes is

• Neurotransmitter

• Synapse

• Axon terminal

• Dendrite

What level of structure is represented by the diagram?

• organ

• organ system

• cell

• tissue

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The function of sneezing is to expel mucus containing foreign particles from the nasal cavity. A person sneezes when foreign particles pass through the nasal hair which triggers the release of chemical that activates body system causing sneezing. What body part is activated?

• circulatory system

• digestive system

• nervous system

• excretory system

All control systems include:

• effectors

• receptors

• actions

• coordination centre

What organs are found in the central nervous system?

• brain

• spinal cord

• nerve

• neurones

Motor nerves _______________________________.

• carry information to CNS

• carry information from CNS

What organs are found in the peripheral nervous system?

• brain

• spinal cord

• nerve

• neurones

Which receptor is responsible for light?

• skin

• tongue

• nose

• eye

• ear