Hormones Flashcards
State the definition of a hormone
A chemical messenger secreted by glands which carry messages to target organs through the blood
State the definition of homeostasis and give an example
Maintenance of our internal environment using negative feedback like temperatures
State the importance of homeostasis
Optimum conditions for enzymes, to live
Name a gland
Adrenal, pituitary, pancreas
Name a hormone
LH ,FSH ,Oestrogen, testosterone, insulin, thyroxin, adrenaline and glucagon
State the 4 hormones in the mensural cycle
FSH, Oestrogen, LH and progesterone
state the functions of the 4 menstural hormones
FSH- mature egg
Oestrogen- thicken uterus lining
LH- release egg/ovulation
Progesterone- maintain lining
compare nervous control to hormonal control
nervous- short-term fast effect
state the 3 neurones in order of a reflex
sensory- relay- motor
the importance of a reflex
allows us to quickly respond to a stimulus without us thinking for protection
state the cells which detect a stimulus
receptor
state the name of the gap between 2 neurones and how the impulse crosses
synpase- neurotransmitter diffuses across
how a neurone sends signals
Electrical impulses
2 components of the CNS (central nervous system)
Brain, spinal cord
2 examples of effectors in a reflex
muscle, gland
