Growth hormone is secreted by which part of the pituitary?
A. Posterior lobe
B. Intermediate lobe
C. Hypothalamus
D. Anterior lobe
Answer: Option D
Solution (By JKExamLibrary)
Growth hormone (somatotropin) is produced by the anterior pituitary. It promotes growth of bones, muscles, and other tissues. Deficiency causes dwarfism; excess causes gigantism or acromegaly.
Explanation:
Pinocytosis ('cell drinking') is a form of endocytosis where the cell membrane invaginates to take in a small droplet of extracellular fluid and dissolved solutes. Phagocytosis is 'cell eating' of large particles, exocytosis is secretion, osmosis is water movement across a semipermeable membrane.
Explanation:
The small intestine (duodenum, jejunum, ileum) is the primary site for enzymatic digestion (by pancreatic enzymes and brush border enzymes) and absorption of nutrients through villi. Stomach initiates protein digestion and absorbs some water/alcohol. Large intestine absorbs water and electrolytes. Esophagus moves food.
Explanation:
Neisseria meningitidis (meningococcus) causes bacterial meningitis, an inflammation of the meninges. N. gonorrhoeae causes gonorrhea. Pneumonia is often Streptococcus pneumoniae.
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