Dr Rob's A-level Biology Page
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Under Construction!!!!! I'm updating the Year 2 Pages as the year progresses to reflect the changes in the specs. Bear with me :)

Component 3


4.6 Homeostasis (the Kidney)

Homeostasis (from Greek: ὅμοιος, "hómoios", "similar", and στάσις, stásis, "standing still") is the property of a system that regulates its internal environment and tends to maintain a stable, relatively constant condition of properties such as temperature or pH.
Picture
Lithograph from Gray's Anatomy (1918) out of copyright
4.6_control_systems.ppsx
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The kidney dissection tutorial (below) was downloaded from the Carolina Biological Supplies website
mammal-kidney-dissection.pdf
File Size: 102 kb
File Type: pdf
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And this self-study animation of kidney function is great from KScience

4.7 The Nervous System

The nervous system is the part of an animal's body that coordinates the actions of the animal and transmits signals between different parts of its body.
4.7_the_nervous_system.ppsx
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4.7b_sensory_receptors_and_the_eye.ppsx
File Size: 2646 kb
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Picture
Typical motor neurone (from wikimedia commons)
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