Answer the following statements true (T) or false (F)
1. Phylogenetic analyses of some vertebrate mineralcorticoid and glucocorticoid receptors and their ligands has suggested that the hormones evolved prior to their receptors.
2. Vasotocin is present in non-mammalian vertebrates and shares structural and functional properties with mammalian antidiuretic hormone and oxytocin. Through these similarities it has been suggested that vasotocin could be the ancestral precursor to the posterior pituitary hormone in vertebrates.
3. Vitamin D is a hormone produced in part by exposure to sunlight.
4. If blood sodium levels rise sharply above normal limits the heart will release more atrial natriuretic peptide.
1. FALSE
2. TRUE
3. TRUE
4. TRUE
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When the myelin sheath is destroyed, like in
MS patients, the resulting disruption in information flow can lead to all of the following EXCEPT
a. muscle weakness. b. severe hyperactivity. c. numbness. d. tremors. e. visual problems
Water flowing back and forth across the gills of fish is known as _____
a. capillary movement b. counter current exchange c. deoxygenation d. pharyngeal movement e. gill slits
Solute and water activity
What will be an ideal response?
Epinephrine and norepinephrine secreted by the adrenal gland enhance the response of the parasympathetic nervous system
Indicate whether the statement is true or false