Find the principal unit normal vector N for the curve r(t).r(t) = (1 + t)i + (6 + ln(cos t))k, -π/2 < t < π/2

Find the curvature of the curve r(t).r(t) = (5 + 5 cos 10t) i – (7 + 5 sin 10t)j + 3k

Compute r”(t).r(t) = (3 ln(6t))i + (9t3)j

Which type of bone cell performs osteolysis?

Tendons and ligaments are composed of dense irregular connective tissue

Which of the following molecules forms desmosomes within cells?

Cartilage cells are called __________

Hydroxyapatite crystals are found within the matrix of elastic cartilage

Which epidermal layer is only found in thick skin?

Sebaceous follicles secrete sebum directly into hair follicles