Which two systems interact most to supply the body with nutrients?
A.
The endocrine system produces hormones that regulate hunger, and the muscular system assists the body in moving food into the stomach.
B.
The digestive system breaks down the food to make it available for absorption, and the circulatory system transports the nutrients to parts of the body.
C.
The nervous system stimulates the appetite, and the excretory system removes waste that was not absorbed by the body.
D.
The skeletal system absorbs all the nutrients needed for the body, and the integumentary system removes excess liquid from food.
B.
The digestive system breaks down the food to make it available for absorption, and the circulatory system transports the nutrients to parts of the body.
Which organelle in a plant cell captures radiant energy from the Sun?
A.
chloroplast
B.
mitochondrion
C.
ribosome
D.
nucleus
A.
chloroplast
Based on the graph, which of the following is a function of the respiratory system? A. to deliver oxygen to cells for cellular respiration at different rates so that different amounts of energy can be made when needed B. to detect changes in the outside world through nerve impulses and send these impulses throughout the body C. to increase the breathing rate during heavy activity so that more carbon dioxide can be absorbed by respiratory cells D. to decrease a person's heartbeat during heavy activity and decrease the flow of blood to areas that will pool with blood
A. to deliver oxygen to cells for cellular respiration at different rates so that different amounts of energy can be made when needed
B. The digestive system breaks down the food to make it available for absorption, and the circulatory system transports the nutrients to parts of the body.
The correct answer is B. The digestive system and the circulatory system interact most to supply the body with nutrients. To explain why, let's break down the process:
1. Digestive System: The digestive system is responsible for breaking down the food we eat into smaller molecules that can be absorbed by the body. It starts in the mouth where food is mechanically broken down by chewing and mixed with saliva to begin the chemical breakdown of carbohydrates. The food then travels down the esophagus into the stomach, where it is further broken down by gastric juices. From there, it enters the small intestine, where most of the digestion and absorption of nutrients occurs.
2. Absorption: The small intestine absorbs the nutrients from the digested food, including carbohydrates, proteins, fats, vitamins, and minerals. These nutrients are in the form of small molecules like glucose, amino acids, and fatty acids.
3. Circulatory System: The absorbed nutrients enter the bloodstream through the walls of the small intestine. They are then transported by the circulatory system to various parts of the body, where they are needed for energy production, growth, repair, and other metabolic activities.
So, the digestive system breaks down the food to make the nutrients available for absorption, and the circulatory system transports these nutrients to the cells and tissues throughout the body. This interaction between the digestive system and the circulatory system ensures that our body receives the necessary nutrients for its proper functioning.