February, 11th

The 11th of February we'll celebrate the Day of Women and Girls in Science. For more information about women scientists, clic on the image below:

Tissues

All living things are made up of cells. In Multicellular organisms, cells get toghether in different types: muscle cells, nerve cells, bone cells, blood  cells, etc. They make tissue:

BONE TISSUE

NERVE TISSUE

MUSCLE TISSUE

PLANT TISSUE

SKIN TISSUE

Organs are made of tissue. For example:

• muscle tissue is used to make the abdominal muscles, the biceps, the heart, the iris, etc.
• Nerve tissue is used to make the brain, the spinal cord, etc.

Review: cell structure

Puns!

Unit2 3 The respiratory system

3. The locomotor system

3.1. Skeleton

• 3.1.1. Head: skull (cranium, maxilla and mandible)
• 3.1.2. Torso: clavicle, scapula, sternum, ribs, vertebral column
• 3.1.3. Limbs: arms (humerus, radius, ulna, phalanges...) and legs (femur, tibia, patella, fibula, phalanges...)

Label as many bones as you can

 

3.2. Muscular system

• 3.2.1. Head: frontal muscles, facial muscles
• 3.2.2. Torso: trapezius, pectoral, dorsal, abdomina.
• 3.2.3. Limbs: arms (deltoid, biceps, triceps) and legs (gluteus, quadriceps, biceps femoris, gastrocnemius)

 Label as many muscles as you can

Doubts about pronunciation? Look up in Google translator:

2. The five senes

Our five senses receive information from the world. They are important for interaction.

2.1. Sight

• Light enters our eye through the cornea and the pupil.
• The iris controls the amount of light. If there is a lot of light, it becomes small.
• The lens focuses the light.
• The image is proyected on the retina. It is connected to the optic nerve.
• The optic nerve sends the information to the brain.

2.2. Hearing

• Sound waves enter the ear through the auditory canal and the eardrum vibrates.
• The vibration moves the three small bones. They transmit this vibration to the cochlea.
• The cochlea transforms the sound into electrical signals that travel to the brain through the auditory nerve.

2.3. Smell and taste

2.3.1. Smell

• The air enters the nose through the nostrils.
• Nerve receptors send the information to the brain.

2.3.2. Taste

• When we eat, receptor on our tongue (called "buds") detect the different tastes. 
• This information is sent to the brain through different nerves.

2.4. Touch

• The dermis contains nerves that detect sensations: temperature, pain, texture, etc. This information is sent to the brain.