Nokea
Where are the Islets of Langerhans found?
- A. Pancreas.
- B. Ileum.
- C. Colon.
- D. Liver.
Correct Answer: A
Rationale: The Islets of Langerhans are clusters of cells in the pancreas responsible for producing hormones like insulin and glucagon.
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Negative feedback can be described as...?
- A. As the concentration of the product increases it inhibits stimulation and consequently decreases product synthesis
- B. As the concentration of the product decreases it decreases stimulation and consequently further decreases product synthesis
- C. Product concentration has no effect on stimulation - another control mechanism is put in place to change rate of production
- D. As the concentration of the product increases it increases stimulation and consequently further increases product synthesis
Correct Answer: A
Rationale: Negative feedback reduces the stimulus as the product accumulates, maintaining homeostasis.
Match each term with the correct description: tubes that lead from each kidney to the bladder
- A. urethra
- B. urinary system
- C. ureters
- D. kidneys
Correct Answer: C
Rationale: The ureters are tubes transporting urine from the kidneys to the bladder.
Formation of gallstones is referred to as:
- A. jaundice
- B. cirrhosis
- C. hepatitis
- D. cholelithiasis
Correct Answer: D
Rationale: Cholelithiasis is the medical term for the formation of gallstones.
The food mixes thoroughly with acidic gastric juice of the by the churning movement-
- A. Rectum
- B. Duodenum
- C. Stomach
- D. Oesophagus
Correct Answer: C
Rationale: The stomach churns food with gastric juice to form chyme.
Insulin is secreted by pancreatic cells-
- A. α-cells
- B. β-cells
- C. Delta cells
- D. Gama cells
Correct Answer: B
Rationale: Insulin is secreted by β-cells in the Islets of Langerhans.