The trachea
A) is lined by dense regular connective tissue.
B) is reinforced with C-shaped cartilages.
C) contains the vocal cords.
D) always maintains the same diameter.
E) ends distally at the level of the diaphragm.
B) is reinforced with C-shaped cartilages.
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You are isolating molecules from different parts of a cell in the lab. You find that you've mixed up your tubes. In one tube, you've identified RNA. Therefore this tube must be from the nucleus, it could not be from the cytosol.
Answer the following statement true (T) or false (F)
Which structure in the figure secretes seminal plasmin, proteolytic enzymes like pepsinogen and lysozyme, and citric acid?
a) C b) K c) B d) G e) L
Neuropeptide Y stimulates
a) Release of insulin b) Inhibition of glucagons c) Thirst centers d) Thermogenesis e) Food intake
The tubular filtrate osmolality ________ as it flows through the ascending limb of the nephron loop.
A. remains unchanged B. decreases C. increases