Discuss the role of orexin in keeping us awake
What will be an ideal response?
Orexin release increases before waking and helps maintain a state of wakefulness throughout the day. The reticular formation is stimulated by orexin-secreting neurons. When the reticular formation neurons are active, they cause the thalamus to begin transmitting external sensory stimuli to the cerebral cortex.
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Environmental hypoxia leads to the following pathological response:
A) Vasoconstriction of pulmonary arterioles. B) Decreased ventilation rate. C) Decreased red blood cell numbers. D) Reduced tidal volume.
Which fluid has a higher concentration of solutes?
A. Interstitial fluid of tissues B. Blood plasma
What is the physiological importance of the fact that the male testes descend to reside in the scrotal sac?
What will be an ideal response
The sole is the __________ or plantar surface of the hoof
Fill in the blank(s) with correct word