Nervous System Basics
The basic unit of the nervous system.
What is a neuron?
The largest part of your brain that controls thinking and movement.
What is the cerebrum?
The organ that detects light.
What is the eye?
This organ is actually a muscle that pumps blood through the body.
What is the heart?
The main purpose of the lungs is to bring in this gas the body needs to live.
What is oxygen?
The two main parts of the nervous system.
What are the central nervous system and the peripheral nervous system?
The part that coordinates balance and posture.
What is the cerebellum?
Tiny hair cells in this organ help you hear.
What is the ear?
The heart is divided into this many chambers.
What is four?
This waste gas leaves your body when you exhale.
What is carbon dioxide?
This long “wire-like” part of a neuron sends signals away from the cell body.
What is an axon?
The part that controls breathing and heartbeat.
What is the brainstem?
These tiny bumps on your tongue help you taste.
What are taste buds?
These upper chambers receive blood returning to the heart.
What are the atria?
The large muscle under the lungs that helps you breathe.
What is the diaphragm?
Chemicals that carry messages across synapses.
What are neurotransmitters?
The folded outer layer of the cerebrum.
What is the cerebral cortex?
This sense works together with smell to help you taste food.
What is taste or flavor?
The thick, strong walls of the heart are made of this type of muscle.
What is cardiac muscle?
Tiny air sacs in the lungs where gas exchange happens.
What are alveoli?
protective coating on axons that speeds up signals.
What is the myelin sheath?
This structure stores and retrieves memories.
What is the hippocampus?
The sense that works through receptors in your skin.
What is touch?
This natural “pacemaker” sets the rhythm of the heartbeat.
What is the SA node (sinoatrial node)?
The system that includes the lungs, trachea, bronchi, and diaphragm.
What is the respiratory system?