Bio 100 Neurons/Nervous system & Circular Respiration

Gathering information

• Sensory input

• Integration

• Motor output

Gathering information

• Sensory input

• Integration

• Motor output

Sending signals to muscles or glands

• Sensory input

• Integration

• Motor output

Comprises the brain and spinal cord; integrates and interprets sensory input

• CNS (Central Nervous System)

• PNS (Peripheral Nervous System)

Comprises all other neural elements; transmits information to & from CNS & is divided into autonomic (involuntary control) & somatic (voluntary control) nervous systems. 

• CNS (Central Nervous System)

• PNS (Peripheral Nervous System)

~-70 mV, with a higher concentration of Na+ outside and K+ inside the cell

• Resting Potential

• Depolarization

• Repolarization

• Hyperpolarization

Opening of voltage-gated Na+ channels, Na+ enters the cell

• Resting Potential

• Depolarization

• Repolarization

• Hyperpolarization

Temporary overshoot of repolarization.

• Resting Potential

• Depolarization

• Repolarization

• Hyperpolarization

What roles do Schwann cells play in the nervous system

• produce the myelin sheath in the PNS.

• produce the myelin sheath in the CNS. 

What roles do oligodendrocytes play in the nervous system

• produce the myelin sheath in the PNS.

• produce the myelin sheath in the CNS.