8.1 Functions Of The Nervous System

Question 1

Sensory receptor monitor numerous external and internal stimuli. We are aware of sensations from some stimuli, such as vision, hearing, taste, smell, touch, pain, body position, and temperature. Other stimuli, such as blood pH, blood gases, and blood pressure, are processed at a subconscious level

Answer 1

Receiving sensory input

Question 2

The brain and spinal cord are the major organs for processing sensory input and initiating responses. The input may produce an immediate response, be stored as memory, or be ignored

Answer 2

Integrating information

Question 3

Skeletal muscles normally contract only when stimulated by the nervous system. Thus, by controlling the skeletal muscle, the nervous system controls the major movements of the body. The nervous system also participates in controlling cardiac muscles, smooth muscle, and many glands

Answer 3

Controlling muscles and glands

Question 4

The nervous system plays an important role in maintaining homeostasis. This function depends on the nervous system’s ability to detect, interpret, and respond to changes in internal and external conditions. In response, the nervous system can stimulate or inhibit the activities of other systems to help maintain a constant internal environment

Answer 4

Maintaining homeostasis

Question 5

The brain is the center of mental activity, including consciousness, memory, and thinking

Answer 5

Establishing and maintaining mental activity