1. Adrenal
2. Pituitary
3. Thymus
4. Thyroid
Adrenal
1. moves through the blood stream and ducts
2. influences development
3. has the same chemical activity in a variety of organisms
4. alters the activity of certain non-adjacent cells
alters the activity of certain non-adjacent cells
1. hormones of inscets
2. peripheral hormones
3. both
4. none
both
1. Chlorination of serine
2. Iodination of isoleucine
3. Iodination of tyrosine
4. Phosphorylation of amino acids
Iodination of tyrosine
1. ectohormones
2. pheromones
3. endorphins
4. prohormones
prohormones
1. concentration of urine
2. dillution of urine
3. quick digestion
4. slow heart beat
concentration of urine
1. thyroxine
2. ecdysone
3. brain hormone
4. pheromone
pheromone
1. is a photoreceptor
2. responds to smell
3. responds to sound
4. is sensitive to light stimulus
is sensitive to light stimulus
1. Thyroxine
2. ecdysone
3. juvenile hormone
4. pheromone
ecdysone
1. Cretinism
2. Exophthalmic goitre
3. Myxoedema
4. Grave's disease
Myxoedema