Languages: English

Reviews the events that occur when fertilization of the ovum takes place. Provides an in-depth look at conception control methods, their effectiveness and some of the risks associated with using them.

Investigates the physiology of the reflex arc through experiments on the pupillary and patellar reflexes. Focuses on the transmission of an impulse across the synapse and at the neuromuscular junction.

Features the primary components of the human central nervous system. Identifies the main structures of the brain and their roles in controlling body systems and maintaining homeostasis.

Illustrates how the human body senses and responds to its internal and external environments. Describes the structures and functions of the peripheral nervous system and examines current research on nerve regeneration.

Highlights the structures and functions of the mammalian eye and illustrates how visual sensory receptors relay messages to the brain. Describes a number of visual disorders, along with the corrective lenses and techniques that can be used to treat them.

Discusses the structures and functions of the human ear and tells how sound waves are transmitted. Examines the role of the inner ear in maintaining balance and equilibrium. Provides examples of technologies which help the hearing impaired communicate.

Investigates the structures and functions of various tactile and chemoreceptors. Uses touch, taste and smell experiments to demonstrate how the sensory-somatic cortex works. Explores Wilder Penfield’s work on the sensory cortex.

Describes how the pituitary and hypothalamus work together to control many body functions. Highlights the homeostatic feedback mechanism involved with regulating water balance in the body. Examines the use of growth hormone in humans.

Explains the function and structure of the thyroid gland. Demonstrates the role of thyroxine in regulating metabolic rate. Examines disorders that may result when the thyroid does not function properly and describes treatments for these conditions.

Explores the many roles of the pancreas and its hormonal secretions. Illustrates how insulin and glucagon help regulate blood glucose levels in the body. Reviews the discovery of insulin and discusses current research on diabetes.