The toxin of Clostridium tetani travels within somatic motor neurons and effects the functioning of their presynaptic neurons. What effect does this have on smooth muscle?

A. Flaccid paralysis
B. Spastic paralysis
C. Lockjaw
D. No effect


Answer: D. No effect

Anatomy & Physiology

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The point of entry of the arteries, veins, nerves, and exit of the renal pelvis is the ________.

Fill in the blank(s) with the appropriate word(s).

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Hydrophilic hormones exert their effects primarily by activating second-messenger systems within their target cells

Indicate whether the statement is true or false

Anatomy & Physiology

Which of the following is INCORRECT about the numbers of spinal nerves?

A) 5 pairs of sacral spinal nerves B) 12 pairs of thoracic spinal nerves C) 7 pairs of cervical spinal nerves D) 5 pairs of lumbar spinal nerves

Anatomy & Physiology

Which structures create the blood brain barrier (BBB)?

A) Desmosomes and tight junctions between astrocytes and ependymal cells that form the capillary walls B) Gap junctions between ependymal cells and endothelial cells that form the capillary walls C) Gap and tight junctions between astrocytes and endothelial cells that form the capillary walls D) Gap junctions between endothelial cells that form the capillary walls E) Tight junctions between endothelial cells that form the capillary walls

Anatomy & Physiology