Which of the following is secreted directly into the blood and carried to different parts of the body?
Adrenaline
Substances that are secreted directly into the bloodstream and travel to distant target organs are called hormones, and they are released by endocrine (ductless) glands. Adrenaline is a hormone secreted by the adrenal glands directly into the blood and is then carried throughout the body to prepare it for fight-or-flight responses.
Bile juice, saliva and pancreatic juice are digestive secretions. They are released by exocrine glands through ducts into the alimentary canal, not into the blood, so they act locally on food during digestion.
Hence, the answer is Adrenaline.
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The contractile protein in skeletal muscle is:
The brain region which is responsible for coordination of voluntary muscular movement posture and balance
One cardiac cycle completes in _____
The amount of air passing into and out of the lungs during each cycle of breathing is referred as:
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