Derivatives of the endoderm include ________
A) epithelial lining of the respiratory tract
B) brain and spinal cord
C) heart and blood vessels
D) kidneys and gonads
A
You might also like to view...
The portal vein is seen in formation
A. superior to the pancreas. B. posterior to the pancreas. C. anterior to the pancreas. D. inferior to the pancreas.
Answer the following statement(s) true (T) or false (F)
1. Locomotion is a function of the spinal cord. 2. Ascending signals in the spinal cord travel via gray matter, while descending signals travel via white matter. 3. The cervical and lumbar enlargements are wide points in the spinal cord marking the emergence of motor nerves. 4. Nerve fibers in a given white matter tract are similar in origin, destination, and function. 5. Voluntary motor signals typically begin in an upper motor neuron in the thalamus.
Define acclimatization and give an example
What will be an ideal response?
The nuclear envelope consists primarily of
A. ribosomal subunits. B. messenger RNA. C. two phospholipid bilayers. D. a double helix of DNA.