Which of the following is an inflammatory cell associated with COPD but NOT asthma?
A. Helper T cells
B. Eosinophils
C. Cytotoxic T cells
D. Mast cells
Answer: C
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Cardiac muscle tissue is single nucleated, has intercalated discs, and is ________.
Fill in the blank(s) with the appropriate word(s).
Which is not correct about the vascular tunic of the eye?
A. The choroid is the most extensive and posterior region of the vascular tunic. B. Melanin pigment granules in the choroid absorb extraneous light. C. The iris is composed of two groups of skeletal muscle fibers. D. The ciliary body epithelium secretes aqueous humor. E. Relaxation and contraction of ciliary muscles alter the shape of the lens.
________ 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)
Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital capacity is 4700 mL; and your dead air space is 150 mL. Your alveolar ventilation rate is ________ mL/min
A) 6,400 B) 4,200 C) 2,400 D) 5,600 E) 3,600