Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download UNIT B: Human Body Systems 9.2 Accessory
Document related concepts
Transcript
UNIT B: Human Body Systems 4 9.2 Accessory Organs of Digestion accessory digestive organs are the pancre gall bladder. McGraw-Hill Fig 9.8 5 The Pancreas The pancreas is an org both endocrine(secretes hormones directly circulatory system) and exocrine(secretes using ducts) functions. • Exocrine function of the pancreas: o Pancreatic cells produce pancreatic juice stomach acid) and digestive enzymes • Endocrine function of the pancreas: • Beta cells: produce insulin • Delta cells: produce somatostatin 7 Insulin • Hormone secreted when blood glucose • Stimulates the uptake of glucose by cells adipose tissue) to lower blood glucose Glucagon • Hormone secreted when blood gluc low • Stimulates the liver to break glycoge glucose to increase blood glucose • Stimulates adipose tissue to break f glycerol and fatty acids (to make gluc 8 Somatostatin • A growth-hormone-inhibiting hormone Fig 9.9 McGraw-H • Making plasma proteins and st vitamins • Maintaining blood glucose leve • Removes bilirubin (breakdown p hemoglobin in blood) and Producing b contains bile salts that emulsify fat in t intestine. • Producing urea, a nitrogenous from the breakdown of amino acids 12 13 Structure and Function of the Liver intestines 14 15 Fig 9.8b Fig 9.10 He 17 Check Your Progress 1. Describe how pancreatic hormones reg glucose levels. 2. Explain why the liver is necessary for life gall bladder can be removed with few cons
