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Questions and Answers
What is the primary function of the liver in the dogfish?
What is the primary function of the liver in the dogfish?
- Secreting bile, storing glycogen and fat, and destroying worn out erythrocytes (correct)
- Secreting digestive enzymes
- Regulating blood sugar levels
- Storing bile and aiding in digestion
Where does the pancreatic duct in the dogfish open?
Where does the pancreatic duct in the dogfish open?
- Into the dorsal fin
- Into the stomach
- Into the intestine (correct)
- Into the liver
What is the structure and location of the rectal gland in the dogfish?
What is the structure and location of the rectal gland in the dogfish?
- Small finger-like body with a duct to the dorsal side of the rectum (correct)
- Round structure connected to the spleen
- Large duct attached to the liver
- Flat organ connected to the stomach
Which statement about the spleen in the dogfish is correct?
Which statement about the spleen in the dogfish is correct?
Which function is NOT performed by the liver of the dogfish?
Which function is NOT performed by the liver of the dogfish?
Which of the following glands in the dogfish has a duct that opens into the intestine?
Which of the following glands in the dogfish has a duct that opens into the intestine?
What is a major function of the liver in the dogfish?
What is a major function of the liver in the dogfish?
Which statement accurately describes the rectal gland in the dogfish?
Which statement accurately describes the rectal gland in the dogfish?
Which of the following is true regarding the spleen in the dogfish?
Which of the following is true regarding the spleen in the dogfish?
What is the primary characteristic of the liver in the dogfish?
What is the primary characteristic of the liver in the dogfish?
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Study Notes
Anatomy of the Dogfish
-
Liver:
- Massive yellowish bi-lobed gland essential for metabolism.
- Functions include bile secretion, glycogen and fat storage, and destruction of aged erythrocytes (red blood cells).
-
Pancreas:
- Contains a small pancreatic duct running the length of the gland.
- Duct opens into the intestine, facilitating the delivery of digestive enzymes.
-
Rectal Gland:
- Small, finger-like structure located on the dorsal side of the rectum.
- Has a specific duct that connects it to the rectum, playing a role in osmoregulation.
-
Spleen:
- Large gland associated with immune functions, not directly related to the alimentary canal.
- Plays a role in blood filtration and the recycling of iron from hemoglobin.
Anatomy of the Dogfish
-
Liver:
- Massive yellowish bi-lobed gland essential for metabolism.
- Functions include bile secretion, glycogen and fat storage, and destruction of aged erythrocytes (red blood cells).
-
Pancreas:
- Contains a small pancreatic duct running the length of the gland.
- Duct opens into the intestine, facilitating the delivery of digestive enzymes.
-
Rectal Gland:
- Small, finger-like structure located on the dorsal side of the rectum.
- Has a specific duct that connects it to the rectum, playing a role in osmoregulation.
-
Spleen:
- Large gland associated with immune functions, not directly related to the alimentary canal.
- Plays a role in blood filtration and the recycling of iron from hemoglobin.
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