AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

THE NERVOUS AND ENDOCRINE SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The spinal cord is an extension of the
A
peripheral nervous system
B
cerebellum
C
brain stem
D
cerebrum
Explanation: 

Detailed explanation-1: -The spinal cord is an extension of the central nervous system (CNS), which consists of the brain and spinal cord. The spinal cord begins at the bottom of the brain stem (at the area called the medulla oblongata) and ends in the lower back, as it tapers to form a cone called the conus medullaris.

Detailed explanation-2: -The spinal cord extends from the foramen magnum at the base of the skull to the level of the first lumbar vertebra. The cord is continuous with the medulla oblongata at the foramen magnum. Like the brain, the spinal cord is surrounded by bone, meninges, and cerebrospinal fluid.

Detailed explanation-3: -The statement is false, the spinal cord originates from the medulla. The hindbrain has three parts: the pons, cerebellum and medulla (also called the medulla oblongata).

Detailed explanation-4: -The spinal cord is a long, thin tubular structure which is an extension of the medulla oblongata, the last part of the brain. It extends all the way down to the bottom of the spine. It is an integral part of the central nervous system and it consists of 31 pairs of nerves. It’s primarily responsible for reflex actions.

Detailed explanation-5: -The spinal cord is an extension of the brain. It carries messages to and from the brain via the network of peripheral nerves connected to it. Nerves also connect the spinal cord to a part of the brain called the brainstem.

There is 1 question to complete.