Secretion takes place throughout the nephron, but mostly in the ________
A) proximal convoluted tubule
B) loop of Henle
C) distal convoluted tubule
D) glomerulus
C
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Pancreatic juice is secreted by the exocrine pancreatic acini
Indicate whether this statement is true or false.
John Musick and Julia Ellis have proposed that the ancestral reproductive mode for elasmobranchs was "yolk-sac viviparity
" That is, embryos were retained throughout their development in the oviducts of the female and emerged as miniatures of the adults (i.e., viviparity), but nutrition was provided by yolk that was deposited at the time the egg was formed, not from the mother during development (i.e., lecithotrophy, not matrotrophy). They suggest that oviparity (depositing eggs that develop outside the body of the mother) was associated with the evolution of small body size because it increased the fecundity of small species of elasmobranchs. What is their reasoning? That is, why would oviparity provide greater fecundity than viviparity for small species of elasmobranchs? What other factors might make one mode superior to the other?
The papillae found in the superficial hypodermis create the unique fingerprints of individuals.
Answer the following statement true (T) or false (F)
Increased expression of ________ in the plasma membranes will promote the cellular uptake of glucose.
A. leptin B. glucagon C. GLUT4 D. insulin