You come home one night to find a burglar in your house. your heart starts racing and you begin to perspire. these physical reactions are triggered by the: question 19 options:

Sympathetic nervous system

These physical reactions are triggered by the sympathetic nervous system.

The sympathetic nervous system is part of the autonomic nervous system that triggers the fight or flight response. The sympathetic nervous system functions through various interconnected neurons in the body and it is responsible for preparing the body for physical and mental activity. The sympathetic nervous system causes the heart to beat faster and stronger, opens the airways for easy breathe, and prevents digestion.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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