What is the function of the peritoneum in the abdominal cavity?
Providing support and reducing friction
Producing digestive enzymes
Storing bile
Filtering waste products
The Correct Answer is A
A. Providing support and reducing friction: The peritoneum is a continuous serous membrane that lines the abdominal cavity and covers the abdominal organs. It secretes a lubricating serous fluid that allows organs to glide against each other without friction during digestion and movement. It also helps suspend organs in place via folds (mesenteries).
B. Producing digestive enzymes: Digestive enzymes are primarily produced by the glandular organs such as the pancreas, salivary glands, stomach lining, and the small intestine, not the peritoneal membrane.
C. Storing bile: Bile is produced by the liver and stored/concentrated in the gallbladder.
D. Filtering waste products: The filtration of waste products from the blood is the primary function of the kidneys (and to a metabolic extent, the liver), not the peritoneum.
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Related Questions
Correct Answer is A
Explanation
A. Central nervous system:Meningitis is inflammation of the meninges - the protective membranes (dura, arachnoid, pia) that surround the brain and spinal cord, which are components of the central nervous system (CNS). Symptoms (fever, headache, neck stiffness, photophobia, altered mental status) reflect CNS involvement.
B. Enteric nervous system:The enteric nervous system is localized to the gastrointestinal tract and controls gut function; it is not the site of pathology in meningitis.
C. Autonomic nervous system:While severe CNS infection can secondarily affect autonomic functions (e.g., heart rate, blood pressure), the primary site of meningitis is the CNS meninges, not the autonomic nervous system itself.
D. Peripheral nervous system:The peripheral nervous system is composed of peripheral nerves outside the brain and spinal cord. Meningitis directly affects the CNS coverings, not the peripheral nerves (unless there are rare complications that secondarily involve peripheral nerves).
Correct Answer is A
Explanation
A. Flat bone; protection of thoracic organs: Ribs are classified as flat bones (thin, flattened, often slightly curved) and their major functions include protecting thoracic organs (heart and lungs) and providing attachment sites for muscles involved in respiration and trunk movement.
B. Irregular bone; varied functions:Irregular bones (e.g., vertebrae, some facial bones) have complex shapes and varied functions; ribs are not irregular bones.
C. Short bone; stability and support:Short bones (e.g., carpals and tarsals) are roughly cube-shaped and provide stability with limited motion; ribs are not short bones.
D. Long bone; support and leverage:Long bones (e.g., femur, humerus) are longer than they are wide and function mainly in support and leverage for movement; ribs are not long bones.
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