The right answer is 4).
The cytoskeleton is made up of biological polymers of proteins, sometimes called fibers because of their large size at the cellular level. They are classified into three categories:
Microfilaments: involves in cytoplasmic phenomena (division, endocytosis, migration).
Intermediate filaments: Maintenance of the nucleus structure.
Microtubules: Involved in the separation of chromosomes during mitosis.
Answer:
most innervation from the vagus nerve
Explanation:
Peripheral nervous system consists of all the neurons and ganglia within the body, outside the central nervous system. It is divided into:
- Somatic nervous system- it controls the movements of skeletal muscles which means that this nervous system is under the voluntary control
- Autonomic nervous system- its role is to control involuntary movements of smooth muscles and glands
Autonomic nervous system consists of:
- sympathetic nervous system
-responsible for the "fight and flight" reactions (stressful situations but also for maintaining homeostasis)
- parasympathetic nervous system
-opposite to sympathetic system, responsible for "rest and digest" reactions (body activities at rest)
- enteric nervous system-controls digestion
