A boy returns to school to begin 7th grade after summer vacation only to find that he is at least four inches taller than several classmates that were the same height as him before the summer. Propose a reason for such a difference.
What will be an ideal response?
The boy has most likely entered puberty and his classmates have not. He has experienced rapid growth as a result of increasing testosterone levels in his body.
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Which of the choices below is not an essential role of salts in the body?
A) neuromuscular activity B) membrane permeability C) secretory activity D) anabolism of proteins
The type of reflex that bypasses the CNS is a(n)
A) autonomic reflex. B) long reflex. C) spinal reflex. D) parallel reflex. E) short reflex.
________ secretion is controlled by neuroendocrine reflexes, whereas ________ secretion is controlled by negative feedback mechanisms.
A. Antidiuretic hormone (ADH); oxytocin (OT) B. Thyroid stimulating hormone (TSH); luteinizing hormone (LH) C. Antidiuretic hormone (ADH); thyroid stimulating hormone (TSH) D. Oxytocin (OT); antidiuretic hormone (ADH) E. Follicle-stimulating hormone (FSH); luteinizing hormone (LH)
What is inflammation?
A. Physical suffering or distress due to injury or illness B. A defense mechanism to warn the person that there is a problem C. The decrease of blood flow to an injured area D. The body's normal immune response to injury and disease