Mini Lesson

Question 1

Osteoblast

Answer 1

coverts cartilage to bone

Question 2

Bone Growth Order (top-down)

Answer 2

-top of epiphyseal growth plate
-Epiphyseal growth plate
–just above the shaft you have cells undergo hypertrophy
-above that you have cells undergoing hyperplasia which is cell division
-shaft containing osteoblasts

Question 3

Environmental factors that influence growth

Answer 3

adequate nutriton
freedom from chronic illness/disease
freedome from chronic stress
sleep

Question 4

Testerone during puberty

Answer 4

stimulates GH and IGF-1 secretions prolonged exposure stimulates GH and IGF-1 secretions

Question 5

Cortisol

Answer 5

exerts antigorwth effects such at catabolism, decalificaion of bone, inhibits GH and IGF-1 secretion

Question 6

High GH and low cortisol

Answer 6

growth

Question 7

HIGH GH and HIGH CORTSIOL

Answer 7

fuel mobilization, no growth

Question 8

What is the most common cause of excess growth hormone

Answer 8

hypersecreting tumor of AP

Question 9

Acromegaly

Answer 9

too much GH after epiphyseal plates close

Question 10

Gigantism

Answer 10

too much GH before epiphyseal plates close

Question 11

GH stimulates growth by

Answer 11

stimulating cell differentiation and dividison
-stimulation of protein synthesis
stimulating IGF-1

Question 12

GH metabolic effects include

Answer 12

mobilize glucose for energy
mobilize fatty acids for energy

Question 13

IGF-1 promotes growth by

Answer 13

stimulating cell division and protein synthesis