You are walking barefoot and step on a tack with your right foot. All of the following will occur EXCEPT

A) flexor muscles in your right thigh and leg contract to remove your foot
B) reciprocal innervation inhibits extensor muscles in the same limb
C) collaterals of sensory neurons stimulate alpha motor neurons that cause extension in the opposite limb
D) collaterals of interneurons stimulate a crossed extensor reflex


Ans: C) collaterals of sensory neurons stimulate alpha motor neurons that cause extension in the opposite limb

Anatomy & Physiology

You might also like to view...

Only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. Why is this?

A. These are relatively short chromosomes. B. These are relatively long chromosomes. C. These are relatively gene-poor chromosomes. D. These are redundant chromosomes. E. These chromosomes have no genes.

Anatomy & Physiology

The ischemic phase of the uterine cycle is brought on by vascular spasms, which in turn are a response to what?

A. Ovulation B. Menstruation C. Rising LH level D. Falling progesterone level E. Rising progesterone level

Anatomy & Physiology

Metabolic rate equals energy expenditure/unit of time

Indicate whether the statement is true or false

Anatomy & Physiology

Which of the following structures contains central pattern generators that help regulate the breathing rhythm?

A. Pons B. Thalamus C. Forebrain D. Cerebellum E. Limbic system

Anatomy & Physiology