Function of sensitivity - Función de relación

Here you have some materials to review and extend what we have learnt in Natural Science Unit 1.
Please check them out and keep learning!

THE FIVE SENSES VIDEOS

La vista

El oído

El olfato

La piel (el tacto)

La boca y los dientes (el gusto)

NERVOUS SYSTEM VIDEOS

Once upon a time... Life - The brain

Once upon a time... Life - The neurones

Erase Una Vez La Vida 09) EL CEREBRO

Erase Una Vez La Vida 10) LAS NEURONAS

http://mastersinpsychologyguide.com/articles/kids-guide-to-the-brain (articles)

http://www.ducksters.com/science/nervous_system.php

https://faculty.washington.edu/chudler/introb.html (Neuroscience for kids)

http://kidshealth.org/en/kids/experiment-main.html (Experiments with senses)

READINGS                   

THE FIVE SENSES.

Nervous System Facts

Learn some fun nervous system facts for kids. The nervous system of humans and other animals is a vital part of how the body functions.

Components of the nervous system including neurons, glial cells and axon all help send nerve signals around the body. Read on to find out about the two main parts of our body's nervous system and many other interesting facts.

• The nervous system is a complex structure of nerves of neurons that transmit signals around the body to coordinate actions. It is in effect our body's electrical wiring.
• The nervous system of vertebrates (which includes humans and animals that have backbones and spinal columns) has two parts, the central nervous system (CNS) and the peripheral nervous system (PNS).
• The CNS includes the brain, spinal cord and retina of the eyes. The brain is protected by the skull, and the spinal cord by the skeletal vertebrae.
• The PNS includes all other nervous system structures that sit outside the CNS but that help connect the CNS to areas of the body.
• Nerves are enclosed bundles of long fibers called axons which are made up of nerve cells. There are two types of nerve cells: neurons and glial cells.
• Glial (or glia) cells are derived from the Greek word "glue". They are specialized cells that provide structure and support to neurons. They help hold neurons in place, supply nutrients to neurons, destroy germs, remove dead neurons, and direct axons of neurons.
• Some types of glial cells generate a substance called myelin that coat axons and work as electrical insulation to help them quickly and efficiently transmit signals.
• Neurons quickly and precisely send signals as electrochemical waves along axons to other cells. There are two types of neurons, sensory neurons and motor neurons.
• Sensory neurons change light, touch and sound into neural signals which are sent back to our CNS to help our body understand and react to its surroundings.
• Motor neurons transmit neural signals to activate muscles or glands.
• There are approximately 100 billion neurons in the human brain and 13.5 million neurons in the human spinal chord.
• The nervous system can transmit signals at speeds of 100 meters (328 feet) per second.
• The field of science that focuses on the study of the nervous system is called neuroscience. Neurology is the medical branch of study and treatment, while doctors and surgeons in this field are called neurologists and neurosurgeons.
• Nerves in our body can be vulnerable to both physical damage and damage through diseases. Damage to nerves can cause great pain, loss of feeling, or loss of muscle control.
• Physiatrists help rehabilitate patients with nervous system damage.

NOSE QUIZ

Q.1 Your nose helps you:

    A) Smell, sneeze, and hear                   B) Smell, see, and feel

    C) Smell, taste, and breathe                 D) Smell, smile, and smooch

Q.2 What are the two holes on your nose called?

    A) Septum         B) Blow holes         C) Nostrils            D) Cartilage

Q.3 Made out of thin pieces of bone, this wall separates your nasal passages:

    A) Nostrils         B) Cartilage            C) Bridge              D) Septum

Q.4 These are sensitive to odor molecules and help your brain recognize smells:

    A) Receptors      B) Nostrils              C) Nasal passages D) Nose hair

Q.5 This icky stuff, also known as boogers, helps capture dust, germs, and small particles. Its medical name is:

    A) Wax               B) Saliva                 C) Mucus              D) Slime

Q.6 If a large particle, like pollen, gets trapped in your nose and tickles it, what happens?

    A) You might  cough                              B) You might sneeze

    C) Your nose might stop breathing        D) You might burp

Q.7 What moves back and forth to move mucus out of the sinuses and the back of the nose?

    A) Boogers         B) Snot                    C) Receptors         D) Cilia

Q.8 What is behind your nose and connects with the back of the throat?

    A) Nasal cavity   B) Nasal passage     C) Hard palate      D) Bone

Q.9 The nose and tongue work together to help you taste.

    A) True               B) False

Q.10 There are at least ______ million receptors in your nose!

    A) 10                  B) 20                        C) 30                     D) 40

KEY

Q.1 Your nose helps you: ✓C) Smell, taste, and breathe

Q.2 What are the two holes on your nose called? ✓C) Nostrils

Q.3 Made out of thin pieces of bone, this wall separates your nasal passages: ✓D) Septum

Q.4 These are sensitive to odor molecules and help your brain recognize smells: ✓A) Receptors

Q.5 This icky stuff, also known as boogers, helps capture dust, germs, and small particles. Its medical        name is:  ✓C) Mucus

Q.6 If a large particle, like pollen, gets trapped in your nose and tickles it, what happens?

       ✓B) You might sneeze

Q.7 What moves back and forth to move mucus out of the sinuses and the back of the nose?     

       ✓D)Cilia

Q.8 What is behind your nose and connects with the back of the throat? ✓A) Nasal cavity

Q.9 The nose and tongue work together to help you taste. ✓A) True

Q.10 There are at least ______ million receptors in your nose! ✓A) 10