Determine the effects of norepinephrine when its binds receptors on blood vessels serving smooth, skeletal, and cardiac muscle cells
What will be an ideal response?
Vasoconstriction results when norepinephrine binds ?1 receptors on the smooth muscle cells of blood vessels serving the organs of the digestive, urinary, and integumentary systems and causes them to contract. Although norepinephrine constricts most of the body's blood vessels, when it binds to ?2 receptors on the smooth muscle cells of blood vessels serving skeletal and cardiac muscle, it causes them to relax. This opens the blood vessels, an action called vasodilation, which increases the blood flow and the delivery of oxygen and nutrients to the skeletal and cardiac muscle cells.
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Summarize the functions of connective tissue
What will be an ideal response?
The ________ vein is formed by the fusion of the greater saphenous vein, femoral vein, and deep femoral vein
A) internal iliac B) external iliac C) common iliac D) inferior vena cava E) azygos
Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid. B. They produce cerebrospinal fluid. C. They phagocytize tissue debris. D. They form myelin in the CNS. E. They help form the blood-brain barrier.
Indicate the type of inheritance involved in each of the following situations: (1 ) children who exhibit the trait have at least one parent who also exhibits it; (2 ) children exhibit the trait even though neither parent exhibits it; and (3 ) the trait
is expressed equally in daughters and sons. A) (1 ) simple inheritance (recessive); (2 ) simple inheritance (dominant); (3 ) autosomal inheritance B) (1 ) simple inheritance (recessive); (2 ) simple inheritance (incomplete dominance); (3 ) autosomal inheritance C) (1 ) simple inheritance (dominant); (2 ) simple inheritance (recessive); (3 ) autosomal inheritance D) (1 ) sex-linked inheritance (dominant); (2 ) sex-linked inheritance (recessive); (3 ) autosomal inheritance E) (1 ) polygenic inheritance; (2 ) simple inheritance (recessive); (3 ) sex-linked inheritance