What does the inner ear do?
The inner ear has two special jobs. It changes sound waves to electrical signals (nerve impulses). This allows the brain to hear and understand sounds. The inner ear is also important for balance.
How do neurons send signals?
Communication among neurons typically occurs across microscopic gaps called synaptic clefts. A neuron sending a signal (i.e., a presynaptic neuron) releases a chemical called a neurotransmitter, which binds to a receptor on the surface of the receiving (i.e., postsynaptic) neuron.
How do two neurons communicate with each other?
Neurons talk to each other using special chemicals called neurotransmitters. Neurotransmitters are like chemical words, sending “messages” from one neuron to another. There are many different sorts of neurotransmitters: some stimulate neurons, making them more active; others inhibit them, making them less active.
Why nervous coordination called the quickest way of communication within the body?
1. “ Nervous coordination is brought about by means Stimuli Receptors of nervous system which is the quickest way of communication CNS Effectors in the body of an animal by electro-chemical messages called nerve Response impulse.” Send appropriate instructionsFrom CNS to effectors.
How do messages travel from one neuron to another?
The place where the axon of one neuron meets the dendrite of another is called a synapse. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron.
What part of the postsynaptic neuron is the signal being accepted?
Dendrites
What part of the nervous system is very well protected by bone?
First, the entire CNS is enclosed in bone. The brain is protected by the skull, while the spinal cord is protected by the vertebra of the spinal column. The brain and spinal cord are both covered with a protective tissue known as meninges.
What 4 Things protect the brain?
The brain is protected by the skull (cranium), cerebrospinal fluid and 3 protective membranes (Meninges).
Which nerves carry messages from the brain to the other parts of our body?
The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.
What part of your brain controls your thoughts?
cerebrum
How does brain convey messages to different body parts?
Neurons communicate with each other by sending chemical and electrical signals. Each neuron is connected with other neurons across tiny junctions called “synapses”. Impulses rush along tiny fibres, like electrical wires, from one neuron to the next.
What organ is in control of all other organs?
The nervous system controls various organs of the body directly. The brain also receives information from many organs of the body and adjusts signals to these organs to maintain proper functioning. The skeletal system makes up the framework of the body and allows us to move when our muscles contract.
What are the 11 organs?
The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.
Does the brain control all organs?
The brain is an amazing three-pound organ that controls all functions of the body, interprets information from the outside world, and embodies the essence of the mind and soul. Intelligence, creativity, emotion, and memory are a few of the many things governed by the brain.