The two main functions of the cerebellum are: (a) coordination of muscle groups and maintenance ...

The two main functions of the cerebellum are:
 
  (a) coordination of muscle groups and maintenance of equilibrium (b) thinking and ability to learn (c) circulation and respiration (d) emotions such as anger and speech

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The bumps and bulges located on the surface of the cerebral cortex are:
 
  (a) sulci (b) gyri (c) nodules (d) lobes

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The middle layer of skin is the:
 
  (a) epidermis (b) subcutaneous tissue (c) sebaceous layer (d) dermis

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An adult brain contains approximately _____________________ neurons:
 
  (a) 100
  thousand (b) 100 million (c) 1 billion (d) 100 billion

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The system responsible for the production and secretion of hormones is the:
 
  (a) central nervous system (b) excretory system (c) endocrine system (d) respiratory sys-tem