The familiar brown color of human feces comes primarily from the orange-colored product of red blood cell breakdown that has been secreted in the bile and has become brown as it travels through the intestines. Which product contributes to this color?
A. Biliverdin
B. Degraded platelets
C. Ferritin
D. Bilirubin
Answer: D
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When a neurotransmitter like acetylcholine is acting in an excitatory manner which of the following is likely a result of the acetylcholine acting on the post synaptic cell?
A) Chemically gated chloride channels will open. B) Chemically gated potassium channels will open. C) Chemically gated sodium channels will open. D) Chemically gated sodium channels will be closed.
What cells contribute to the process of calcification during intramembranous ossification?
A) osteocytes B) osteoblasts C) keratinocytes D) osteoclasts
Trace the pathway of filtrate as it flows through the renal tubule starting with the proximal tubule and ending with arrival at the collecting duct
What will be an ideal response?
In the extrinsic pathway, damaged tissues release
A. activated factor V. B. calcium. C. factor VII. D. thromboplastin (tissue factor III) E. factor XII.