In Animals with a Brain, the Two Major Divisions of the Nervous

question 76

Multiple Choice

In animals with a brain, the two major divisions of the nervous system are the ____. ​

• A)autonomic and peripheral nervous systems
• B)central and peripheral nervous systems
• C)brain and spinal cord
• D)nerves from the brain and the peripheral nervous system
• E)cranial and spinal nerves

---

Definitions:

Unencapsulated Receptors

Sensory receptors not surrounded by connective tissue capsules, detecting changes in their environment.

Meissner's Corpuscles

Sensitive mechanoreceptors located in the papillary layer of the dermis, particularly in areas like the fingertips and lips, responsible for sensitivity to light touch.

Free Nerve Endings

Sensory receptors found throughout most of the body that respond to pain, temperature, touch, and pressure.

Nociceptors

Specialized sensory neurons that detect signals indicating potential harm and transmit pain signals to the brain.