Which of the following tarsal bones form the heel?
A) cuboid
B) talus
C) calcaneus
D) navicular
C
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This figure shows an intestinal villus. What is the invagination indicated by number 2?
A. Endocrine gland B. Gastric gland C. Peyer patch D. Intestinal gland E. Lymphatic nodule
When a person is exposed to temperature extremes, why is it difficult to distinguish hot from cold objects?
A. At extremes, pain receptors are stimulated by both very hot and very cold objects. B. Temperature perception requires more than one type of receptor. C. Most temperature receptors cannot differentiate hot from cold. D. Pain receptors are inhibited by both very hot and very cold objects. E. Temperatures above 37 degrees centigrade actually stimulate the cold receptors.
Interactions between actin and myosin filaments of the sarcomere are responsible for
A) the striped appearance of skeletal muscles B) muscle fatigue C) the conduction of neural stimulation to the muscle fiber D) muscle relaxation E) muscle contraction
What is the correct order for the events that occur during a reflex?
a: Impulse travels through sensory neuron to the CNS b: A stimulus activates a receptor c: Information is processed by interneurons d: Motor neuron transmits impulse to effector e: Effector responds A. a, b, c, d, e B. b, a, c, d, e C. c, b, a, e, d D. c, a, b, d, e E. b, d, c, a, e