The increased amount of gray matter in the lumbar region of the spinal cord is known as the ________.

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


lumbosacral enlargement

Anatomy & Physiology

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Elastic recoil refers to the tendency of the chest wall to expand

Indicate whether the statement is true or false

Anatomy & Physiology

An EPSP:

A. is a direct result of the opening of ligand-gated channels permeable to both Na+ and K+ ions. B. is a direct result of the opening of voltage-gated channels permeable to both Na+ and K+ ions. C. stabilizes the membrane to remain at its resting potential. D. opens voltage-gated Ca2+ channels in the presynaptic membrane. E. occurs when voltage-gated Cl- channels open in a postsynaptic cell membrane.

Anatomy & Physiology

The specific combination of alleles that a person inherits for a certain trait is called the

A. genotype. B. genome. C. locus. D. phenotype. E. homologous chromosome.

Anatomy & Physiology

What is the average life span of red blood cells?

A. 4 to 5 days B. 10 days C. 20 days D. 120 days E. Several decades

Anatomy & Physiology