Question

1. homeostasis is the tendency of the

a. environment to maintain a relative balance among abiotic and biotic features
b. biogeochemical cycles in nature to recycle matter constantly and rapidly
c. human body to sense external and internal stimuli
d. human body to maintain a relatively constant internal environment
hint: the balance of nature is termed a steady state condition. homeostasis is a term used with living systems.

1. the importance of the human nervous system in maintaining homeostasis is that it

a. directs the muscular system in response to external stimuli
b. has large conscious area, the cerebellum of the brain, that directs all other systems
c. integrates and co - ordinates all other body systems
d. consists of sense receptors that record a great variety of stimuli externally and internally
hint: the cerebellum is an unconscious (involuntary) part of the brain that co - ordinates posture and muscles. try not to mix up similarly spelled cerebrum and cerebellum.

Explanation:

1. Homeostasis refers to the ability of the human body to maintain a relatively constant internal environment. It is not about the environment's balance between abiotic and biotic features, biogeochemical cycles, or just sensing stimuli.
2. The human nervous system is crucial for homeostasis as it integrates and coordinates all other body - systems. The cerebellum is an unconscious part of the brain for posture and muscle coordination, not a large conscious area directing all systems. The muscular system response to external stimuli is just one aspect, and sense receptors are not the main reason for the nervous system's importance in homeostasis.

Answer:

1. D. human body to maintain a relatively constant internal environment
2. C. integrates and co - ordinates all other body systems