Thermoreg - The Neonatal Niche Neonates face problems not...

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The Neonatal Niche Neonates face problems not faced by adults Unique to neonates because of their size, anatomy and physiology Neonates adopt their own strategies to cope with these unique problems Coping strategies involve both behavior and physiology
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Thermoregulation in Altricial Neonates
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Thomas, K. (1994) Thermoregulation in neonates. Neonatal Network, 13, 15-22.
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1. cannot shiver 2. has precarious energy balance 3. small size 4. cannot vasoconstrict 5. no hair 6. little body fat, thin skin Thermoregulatory Problems of Altricial Mammals
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Linear 1 2 3 4 5 Surface 1 4 9 16 25 Volume 1 8 27 64 125 The Problem with Being Small S:V = linear dimension 2/3
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age wt.(g) vol.(cm 3 ) area (cm 2 ) s:v s:v, x adult adult 400 400 328.5 0.8:1 1.0 60 day 200 200 206 1.1 1.25 10 day 30 30 58 2:1 2.5 newborn 5 5 17.5 3.5:1 4.4 Effects of Growth on Surface:Volume Ratios, Rat
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for 5 to 6 percent of the body weight of the newborn rabbit. It is concentrated, as shown in sections, around the neck and between the shoulder blades. Human infant at birth has a thin sheet of brown adipose tissue between the shoulder blades and around the neck, and small deposits behind the breastbone and along the spine.
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This note was uploaded on 11/21/2011 for the course DEP 3053 taught by Professor Miller during the Fall '08 term at University of Florida.

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Thermoreg - The Neonatal Niche Neonates face problems not...

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