Which statement about nervous systems is NOT true?
a. The arthropod nervous system has ganglia that lie within the central nervous system.
b. Arthropods have a solid and dorsal nerve cord
c. The nerve cord of vertebrates has a segmental branching pattern.
d. In vertebrates, interneurons are only found in the central nervous systems..
e. In vertebrates only two neurotransmitters control the effector organ responses regulated by efferent neuronal terminals.
B
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Central venous blood pressure:
a. can be almost zero in the inferior vena cava b. is usually 120 mm Hg during systole c. is usually 80 mm Hg during diastole d. both B and C above
__________, which is secreted from an endocrine gland in the brain, has antioxidant properties, enhances the immune system, and may slow the aging process
Fill in the blank(s) with correct word
The normal site of fertilization is the
a. ovary b. uterus c. fallopian tube d. vagina e. fimbria
Degeneration of the neurons in which of the following structures leads to the muscle tremors associated with Parkinson disease?
A) Substantia nigra B) Tegmentum C) Pons D) Inferior colliculi E) Cerebral crus