The following answers correspond to the questions from CYU 3.5 (Science Probe)
1) Other organ systems not mentioned in Fig 1 on Pg 78 include:
Muscular system – helps your body move and function – skeletal muscle / smooth muscle / cardiac muscle
Skeletal System – bones/ligaments/tendons – works with muscular system to help your body move
Nervous System – brain / spinal cord / nerves – body’s control system = send receives and processes nerve impulses throughout your body
Endocrine System – Glands and Hormones / Chemical Messengers
Integumentary System – skin / hair / nails – guards the body’s physical and biochemical integrity; provide sensory info regarding surrounding environment; helps maintain constant body temp
Lymphatic System (Immune System) – Defense system – produces white blood cells & distributes fluids to maintain stasis.
Reproductive System – organs utilized in reproduction (male / female)
2) The Circulatory and Respiratory System:
Circulatory System carries oxygen to the cells of the body and removes carbon dioxide
Respiratory System supplies oxygen and removes carbon dioxide from the body
Respiratory system depends on the circulatory system to deliver oxygen to the body and to collect carbon dioxide from the body and deliver it to the respiratory system.
The circulatory system relies on the respiratory system to exchange oxygen and carbon dioxide with the outside air.
3) The nervous system is better suited to detect danger. The senses (eg. vision; hearing; taste; touch) used to detect a dangerous situation all produce electrical signals that are sent along the nerves of the nervous system.
4) The difference between a response from the nervous system and a response from the endocrine system:
The Nervous system enables the body to adjust quickly to changes in the environment. (fight or flight response) The brain sends electrical signals to the body and your body responds to the stimuli – muscles are prompted to run or relax
The Endocrine System is designed to maintain control over a longer period of time. It sends the chemical messages that your body needs to respond appropriately to the situation – eg. adrenaline : enables your heart to beat faster and your body takes in more oxygen as you breathe faster – this allows your muscle cells to have more oxygen and nutrients allowing you to run faster and longer.
5) If you stepped on a tack the receptors in your foot would send a signal to your brain (central nervous system). The signal is relayed to your muscles (leg) and the muscles respond by moving your foot.
nervous system – muscular system – skeletal system – lymphatic system (fight infection)
6) Organs that supply nutrients and remove waste include: heart, intestines, artery, liver, kidney, stomach, lungs
organs that regulate the body include: eyes and brain
7) Nerves carry signals to muscles. These cause muscles to contract.
8) If the circulatory system failed to work skin cells would die because they require oxygen and nutrients to function. Also the accumulated wastes that were not removed by the circ system would eventually kill the skin cells.
9) Organ systems of the body are interdependent. They all exist close in a common environment. A malfunction of one system affects all the other systems. Therefore it is important to have organ systems that regulate all other systems.