CNS/PNS & Impulse Transmission. Autonomic NS- “subconscious” Regulate activity of smooth muscle (digestive), cardiac muscle (heart) & certain glands (midbrain) Structures involved –neurons – integration within the brain • Receives input, ready for action Somatic NS- “conscious”
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Regulate activity of smooth muscle (digestive), cardiac muscle (heart) & certain glands (midbrain)
Structures involved –neurons – integration within the brain • Receives input, ready for action
Somatic NS- “conscious”
Means consciously perceived sensations – excite skeletal muscle to move muscles/skeleton
Structures involved - neuron connects CNS to organ or muscle
Watch this at work:
McGraw-Hill: K/Na pump and synaptic cleft movement animations
What does a severed spinal cord mean here?
Medial rectus moves eye towards nose
Lateral rectus moves eye away from nose
Superior rectus raises eye
Inferior rectus lowers eye
Superior oblique rotates eye
Inferior oblique rotates eye
Tough transparent outer layer
Fluid chamber behind (AH)
Disk of colored contractile tissue
(Regulated by iris) determines amount of VLS entering the eye
Attached to tiny muscles to lens and eye
Flexible and transparent piece of protein
Iris (Small muscles) attached
Convex: flips images over (corrected in visual cortex of brain)
Lubricates lens (after cornes)
Allows you to see color…sometimes???
Sends messages to brain
‘whites’ of the eyes
Reflective membrane; night vision
Enjoy the illusions!