Figure P19.43 shows a pV-diagram for 0.0040 mol of ideal H2 gas. The temperature of the gas does not change during segment bc. (a) What volume does this gas occupy at point c? (b) Find the temperature of the gas at points a, b, and c. (c) How much heat went into or out of the gas during segments ab, ca, and bc? Indicate whether the heat has gone into or out of the gas. (d) Find the change in the internal energy of this hydrogen during segments ab, bc, and ca. Indicate whether the internal energy increased or decreased during each segment.
BSCI 201: Anatomy & Physiology Chapter 5 (Integumentary System) Notes- Part 2 by Mehrnaz Ighani . Hair: Consists of dead keratinized cells None located on palms, soles, lips, nipples, and portions of external genitalia Functions: 1. Warn of insects on skin 2. Hair on head guards against physical trauma 3. Protect from heat loss 4. Shield skin from sunlight . Structures of hair: Hair (pilli): flexible strands of dead keratinized cells Produced by hair follicles Contains hard keratin, not like soft keratin found in skin . hard keratin is more durable and cells do not flake of Regions: 1. Shaft: area that extends above scalp, where keratinization is complete . 3 parts