124627
Descripción
Mapa Mental por buttsaggington, actualizado hace más de 1 año
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Creado por buttsaggington
hace casi 11 años
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Biology revision 1- Structure of the human body
- The human skeleton contains 206 bones
- Bones allow us to move, support and protect us
- Bones are hollow, and contain marrow, which makes red blood cells
- Invertebrates have no backbone, but a tough exoskeleton
- Invertebrates have a backbone and internal skeletons called endoskeletons
- Invertebrates have a backbone and internal skeletons called endoskeletons
- Bones are light and strong
- Muscles always work in pairs called antagonistic pairs.
- Muscles are attatched to bones by cords called tendons
- Muscles contain the movements of the joints
- Muscles contract and expand to move joints
- Types of joints are-hinge joints, knee joints, hip joints and ball and socket joints.
- Knee joints are in the knee (obviously) and are not very special
- HIinge joints only bend in one direction
- Ball and socket joints allow twisting and bending
- Hip joints also have no special features
- Fixed joints are in the skull, where bones meet but there is no movement
- Knee joints are in the knee (obviously) and are not very special
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