Choose the correct statement:
Cartilage rings keep the alveoli open.
The temperature and humidity of the air are adjusted as the air flows through the nasal cavities.
The larynx changes shape as we speak, creating resonance chambers of different sizes.
The center of each lung contains a large hollow area in which most of the gas exchange occurs.
The temperature and humidity of the air are adjusted as the air flows through the nasal cavities.
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The locomotor pattern generator is located in the
A) Spinal cord. B) Brainstem. C) Autonomic nervous system. D) Peripheral nervous system.
A patient with hypertension and poorly controlled diabetes complains of frequent urination. She does not take any medications yet for these conditions. What can explain her complaint?
A. Glomerular filtration rate decreases in response to excessive stretch of the glomerular capillaries in hypertension. B. Blood glucose increases the osmotic pressure in the tubules, causing increased urine production. C. Sympathetic stimulation increases when blood pressure increases, which causes dilation of the afferent arterioles. D. Renal autoregulation prevents blood glucose from entering the filtrate, but the pressure in the glomerulus increases filtrate production.
The ________ are a series of interconnected cavities that are filled with cerebrospinal fluid
A) hemispheres B) ventricles C) meninges D) lobes
In skeletal muscle, when calcium binds to the regulatory protein troponin, it increases the affinity of neighboring troponin molecules for calcium. This is an example of
A. allosteric modulation. B. cooperativity. C. covalent modulation. D. phosphorylation. E. saturation.