Question

1. how do heredity and environment work together? a. epigenetics: module 1.2 overview of the nervous system 9. diagram the breakdown of the nervous system, identifying the functions of each part. a. nervous system: b. central nervous system: c. peripheral nervous system: d. autonomic nervous system: e. somatic nervous system: f. sympathetic nervous system: g. parasympathetic nervous system: h. afferent neurons: i. efferent neurons: j. interneurons: k. reflexes:

Explanation:

Epigenetics studies how environmental factors can influence gene - expression without changing the DNA sequence, showing the interaction between heredity and environment. For the nervous system breakdown: The nervous system is the body's communication network. The central nervous system (CNS) consists of the brain and spinal cord, processing and coordinating information. The peripheral nervous system (PNS) connects the CNS to the rest of the body. The autonomic nervous system controls involuntary functions like heart rate and digestion. The somatic nervous system controls voluntary movements. The sympathetic nervous system activates the "fight - or - flight" response, while the parasympathetic nervous system promotes "rest - and - digest". Afferent neurons carry sensory information to the CNS, efferent neurons carry motor commands from the CNS, interneurons are in the CNS and process information, and reflexes are involuntary, rapid responses to stimuli.

Answer:

1. Epigenetics shows how heredity and environment interact by influencing gene - expression through environmental factors without altering DNA sequence.

9.
a. The body's communication network.
b. Consists of brain and spinal cord; processes and coordinates information.
c. Connects the central nervous system to the rest of the body.
d. Controls involuntary functions (e.g., heart rate, digestion).
e. Controls voluntary movements.
f. Activates "fight - or - flight" response.
g. Promotes "rest - and - digest".
h. Carry sensory information to the central nervous system.
i. Carry motor commands from the central nervous system.
j. In the central nervous system and process information.
k. Involuntary, rapid responses to stimuli.