Avian digestive tube
Explain the special structures of avian digestive tube and also their respective functions?
Expert
Digestive tube of the birds has special structures:
a) The crop,
b) The proventriculus and
c) The gizzard.
Function of the crop is the temporary storage of the ingested food and it is generally a more dilated area of the avian esophagus. The proventriculus refers to the chemical stomach of birds where the food is mixed with the digestive enzymes. Gizzard is muscular pouch which serves as mechanical stomach where food is ground in order to increase the exposure area of food particles for the digestive enzymes to act.
How does alkalosis is corrected through the breathing process?
Define attenuation? Briefly explain it.
Write down some diseases caused by the abnormal GH secretion by hypophysis?
What is phosphorylation? What are several biological procedures in which phosphorylation plays a vital role?
Give a brief explanation of cell cycle.
Name the cell organelles which are well-developed in secretory cells?
Describe the main evolutionary innovation represented by nematodes? What is the benefit of that innovation?
Explain the spontaneous generation hypothesis?
Give a brief explanation of Cardiac Pacemaker.
Name several features of a secondary immune response which differentiate it from primary immune response?
18,76,764
1932929 Asked
3,689
Active Tutors
1439335
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!