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Oxygen and carbon dioxide travel into and out of the bloodstream via diffusion across alveolar and capillary membranes.
The red blood cells in your body contain oxygen and carbon dioxide. So, as the red blood cells travel through your bloodstream, the oxygen travels through to your heart, then your lungs, along with the oxygen.
The endocrine glands secrete hormones directly into the bloodstream. The hormones then travel to target tissues via the circulatory system.
Yes
carbon dioxide
During the respiratory system, oxygen travels through the respiratory tract and diffuses to the red blood cells from alveoli which receives carbon dioxide from the RBC's. The carbon dioxide comes from cells in the body. When the RBC's travel through the body to transfer oxygen to the cells it receives carbon dioxide. The carbon dioxide enters the alveoli and travels through the respiratory tract and is breathed out.
Hormones are chemical messengers. They travel in your bloodstream to tissues and organs. They affect many different processes, including growth, development, metabolism, and reproduction. They are secreted directly into your bloodstream by endocrine glands, such as the pituitary, adrenal glands, pancreas, ovaries, and testes.
It spends its time as carbon dioxide or as an organic compound (like glucose). Carbon dioxide is converted into glocose as food for the plant during photosynthesis and is turned back after cellular respiration unless it stays as an organic compound.
Both Glucose and Carbon Dioxide don't pass through the red blood cells but stay in the yellow watery part of the blood called plasma
Both, it takes water and Carbon Dioxide up and it lets out Oxegen.
Yes, but only to be absorbed in the liver and put through the Kreb's cycle of energy production. In general, acetic acid is treated as an input for the aerobic respiration cycle and does not travel in the systemic bloodstream as a nutrient for other tissues.
Hormones travel from endocrine glands through bloodstream to target organs.