Capillaries lack smooth muscle and elastic or fibrous tissue reinforcement. Instead, their walls consist of ________, supported on a cellular matrix called ________.

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


a flat layer of endothelium, the basal lamina.

Anatomy & Physiology

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The nucleotide triplet in tRNA that base-pairs with a complementary triplet in mRNA is called the codon

Indicate whether the statement is true or false.

Anatomy & Physiology

The center of an atom is called the

A) core. B) hub. C) middle point. D) nucleus. E) focus.

Anatomy & Physiology

The soft palate reflexively opens the nasopharynx to allow the passage of food, which is now called a bolus

Indicate whether the statement is true or false

Anatomy & Physiology

Which of these factors does not affect hemoglobin's affinity for oxygen?

A) RBC metabolic activity B) temperature C) electrolyte balance D) the PO2 of blood E) blood pH

Anatomy & Physiology