What is the origin of lymphatic vessels?
A) veins of the blood vascular system
B) the organs of the digestive system
C) arteries of the blood vascular system
D) the glands of the endocrine system
A
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Bile salts are derivatives of cholesterol
Indicate whether the statement is true or false
Answer the following statements true (T) or false (F)
1. The bonds that join amino acids together to form a protein are called peptide bonds. 2. The functional proteins in the body include hormones, collagen, and cell membrane receptors. 3. The shape of proteins determines their role in body chemistry. 4. The basic building blocks of nucleic acids are nucleotides. 5. Both DNA and RNA contain uracil.
Which of the following statements regarding the determination of stimulus intensity is true?
A. The only means of detecting intensity changes is through recruitment of greater numbers of sensory units. B. The duration of receptor potentials decreases with increasing stimulus intensity. C. The frequency of action potentials increases with increasing stimulus intensity. D. Stronger intensity stimuli cause rapid adaptation, while weaker stimuli cause slower adaptation. E. The amplitude of action potentials increases with increasing stimulus intensity.
A diminished reflex response that may indicate damage to a segment of the spinal cord is a(n) ________ reflex.
A. hypoactive B. ponderous C. excessive D. diminutive E. hyperactive