Understanding Human Sensory Receptors and Brain Anatomy
Human Sensory Receptors
Photoreceptors: Light – eyes – sight
Mechanoreceptors: Pressure (movement) – skin and muscles – touch
Vibration (waves): Ears – hearing
Chemoreceptors: Dissolved chemical substances – tongue – taste
Volatile chemical substances: Nasal passage – smell
Thermoreceptors: Changes in temperature – skin – touch
Brain Anatomy and Function
Cerebrum | Skull Meninges Cerebrospinal fluid | – Largest part of the brain – Made of white matter (inside) and grey matter (outside) – Divided into hemispheres | Responsible for thoughts, voluntary movement, and learned behavior |
Cerebellum | Back of the brain | Involved in balance and coordination | |
Brain Stem | – Connected with the spinal cord – Nerves cross it | Controls vital body functions (heartbeat and breath) | |
Spinal Cord (nerve tissue) | – Spine (vertebrae) – Meninges – Cerebrospinal fluid | White matter (outside), grey matter (inside) | Produces reflexes, carries sensory nerve impulses (to brain) & motor (brain effectors) |
Cerebrum | Skull Meninges Cerebrospinal fluid | – Largest part of the brain – Made of white matter (inside) and grey matter (outside) – Divided into hemispheres | Responsible for thoughts, voluntary movement, and learned behavior |
Cerebellum | Back of the brain | Involved in balance and coordination | |
Brain Stem | – Connected with the spinal cord – Nerves cross it | Controls vital body functions (heartbeat and breath) | |
Spinal Cord (nerve tissue) | – Spine (vertebrae) – Meninges – Cerebrospinal fluid | White matter (outside), grey matter (inside) | Produces reflexes, carries sensory nerve impulses (to brain) & motor (brain effectors) |
Cerebrum | Skull Meninges Cerebrospinal fluid | – Largest part of the brain – Made of white matter (inside) and grey matter (outside) – Divided into hemispheres | Responsible for thoughts, voluntary movement, and learned behavior |
Cerebellum | Back of the brain | Involved in balance and coordination | |
Brain Stem | – Connected with the spinal cord – Nerves cross it | Controls vital body functions (heartbeat and breath) | |
Spinal Cord (nerve tissue) | – Spine (vertebrae) – Meninges – Cerebrospinal fluid | White matter (outside), grey matter (inside) | Produces reflexes, carries sensory nerve impulses (to brain) & motor (brain effectors) |