Which of the following functions is associated with the spleen?
Producing coagulation factors
Destroying dying red blood cells
Producing leukocytes before birth
Storing glycogen
The Correct Answer is B
a: Producing coagulation factors - This function is associated more with the liver, which produces various clotting factors involved in the coagulation process.
b. Destroying dying red blood cells: The spleen is primarily involved in the destruction of old or damaged red blood cells. It acts as a reservoir for blood, where it filters out old or abnormal red blood cells, recycling their components and removing any potentially harmful substances.
c: Producing leukocytes before birth - Leukocytes (white blood cells) are primarily produced in the bone marrow, not the spleen.
d: Storing glycogen - Glycogen storage is mainly associated with the liver and muscles, not the spleen.
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Related Questions
Correct Answer is C
Explanation
a: Insertion site - This refers to the attachment point of a muscle tendon to a bone, not the point of contact between nerve and muscle.
b: Origin site - This refers to the attachment point of a muscle tendon to a stationary bone, not the neuromuscular junction.
c. Neuromuscular junction: The neuromuscular junction is the specialized synapse between a motor neuron and a muscle fiber. It is where the nerve impulse is transmitted from the motor neuron to the muscle fiber, resulting in muscle contraction
d: Interneuron - Interneurons are neurons that transmit signals between other neurons; they are not directly involved in the neuromuscular junction.
Correct Answer is B
Explanation
a. Mouth: The mouth is primarily responsible for the mechanical breakdown of food and the beginning of starch digestion via salivary amylase, but it is not a major site of nutrient absorption.
b. Small intestine: The small intestine is the primary site for nutrient absorption. The majority of carbohydrates, proteins, fats, vitamins, and minerals are absorbed here through its extensive surface area provided by villi and microvilli.
c. Large intestine: The large intestine primarily absorbs water and electrolytes. It is not a major site for nutrient absorption.
d. Stomach: The stomach is mainly involved in the mechanical and chemical breakdown of food, particularly proteins, but only a small amount of nutrients (e.g., alcohol, some drugs) are absorbed here.
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