The efferent or motor branch of the peripheral nervous system is subdivided into the (voluntary) and (involuntary) nervous systems.

Somatic; Autonomic

The efferent or motor branch of the peripheral nervous system is subdivided into the somatic (voluntary) and peripheral (involuntary) nervous systems.

Explanation:

The peripheral nervous system (PNS) consists of the rest the nervous tissues (apart from the brain and the spinal cord) found throughout the body. It consists of

1) somatic nervous system, which controls activities such as running, talking etc that are done at will i.e voluntary actions;

2) autonomic nervous system, which controls activities such as heartbeat, breathing, digestion etc, that are not done on will i.e involuntary actions

The efferent branch of peripheral nervous system is subdivided into Somatic (voluntary) and autonomic (involuntary)

Explanation:

Peripheral nervous system includes all the nerves and gangalia that are outside the spinal cord and brain.

The efferent division of peripheral nervous system are subdivided into ;

Somatic also called somatomotor supplies motor impulses to skeletal muscles.

Autonomic supplies motor impulses to cardiac muscles, glandular epithelium muscles, smooth muscles. The autonomic nervous system regulate involuntary actions.

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the missing space is phylum