This structure located in the epidermis serves as a tactile (touch) receptor
A) root hair plexus B) Merkel cell C) Langerhans cell D) lamellar corpuscle
Answer: B
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Chondroblasts ________.
A) are mature cartilage cells located in spaces called lacunae B) within the cartilage divide and secrete new matrix C) located deep to the perichondrium divide and secrete new matrix on the internal portions of the cartilage D) never lose their ability to divide
Vasoconstriction:
A. decreases peripheral resistance B. increases arterial blood pressure C. is caused by relaxation of smooth muscle in the blood vessel walls D. decreases cardiac output
Identify the region of the ulna that articulates with the humerus when the forearm is in full extension.
A. Olecranon process B. Trochlear notch C. Coronoid process D. Trochlea
Which of the following is a double-stranded protein that blocks actin-binding sites?
A) myosin B) DNA C) tropomyosin D) troponin