circulatory system
The circulatory system does not open directly to the external environment. It consists of the heart, blood vessels, and blood, and functions to transport nutrients, oxygen, carbon dioxide, and waste products throughout the body.
The nervous system and the endocrine system are the two main systems that directly control homeostasis in most animals. The nervous system quickly responds to changes in the body's internal and external environment, while the endocrine system secretes hormones that regulate various bodily functions and help maintain a stable internal environment.
The nervous system and the endocrine system work together to regulate the internal and external environment of the body. The nervous system uses electrical impulses to send signals quickly, while the endocrine system uses hormones to send chemical messages more slowly. Together, these systems monitor and adjust various bodily functions to maintain homeostasis.
An exchange surface is in direct contact with the external environment in the respiratory and digestive systems. In the respiratory system, the alveoli in the lungs act as exchange surfaces for oxygen and carbon dioxide. In the digestive system, the lining of the small intestine serves as an exchange surface for the absorption of nutrients.
A system boundary defines the scope and limits of a system, indicating what is included within the system and what is not. It helps in understanding the interactions between the system and its external environment. This boundary is essential for determining system requirements and ensuring that all necessary components are considered.
The circulatory system does not open directly to the external environment. It consists of the heart, blood vessels, and blood, and functions to transport nutrients, oxygen, carbon dioxide, and waste products throughout the body.
You should consider if inside of the digestive tract is made up of cells. organs or systems that have hollow tube such as mouth, respiratory tract, digestive system, and GI tract are considered external environment because it is connected to outside. You can think of more examples of the external environment in the body.
Vertebrate animals use the nervous system to help them respond to their environment. This system includes the brain, spinal cord, and peripheral nerves, which work together to process sensory information and coordinate appropriate responses to stimuli in the environment.
This body system that is responsible for the exchange of gases between the blood and the external environment.
Information entering the central nervous system from the external environment is called external stimuli. External stimuli are factors which are detected by the body and communicated to the central nervous system such as temperature and scents.
The nervous system and the endocrine system are the two main systems that directly control homeostasis in most animals. The nervous system quickly responds to changes in the body's internal and external environment, while the endocrine system secretes hormones that regulate various bodily functions and help maintain a stable internal environment.
That would be the skin.
autonomic nervous system
The nervous system.
The nervous system.
Skeleton System
Skeleton System