Flashcards in Lecture 1: Success Of Mammals Deck (16):
Have a placenta and give birth to live young
Give birth to live young, enter a ppuch and the young feed on milk (marsupials)
First secretion from mammary glands. Rich in antibodies
Benefits of lactation
Constant food source and enables survival from few numbers
Why does a reindeer have high fat content in milk?
Their environment has exteemely low temperatures therefore need a bigger layer of fat
Why does breast milk contain a low concentration of protein, moderate fat and high lactose?
1. Slow growth, 2. energy and 3. to maintain blood glucose and provide nutrients for the growing brain
What is lactose?
A disaccharide of glucose and galactose
The female parent of an offspring
Why can the mother and its young occupy the same territory?
The mother feeds the young so there is no competition between the two for food
How do young learn?
From the experience of their social group
Functions of the follicle stimulating hormone?
Stimulate sperm producion and egg release
Functions of the lutenising hormone
triggers ovulation and leydig cell production of testosterone
Functions of Oestrogen
Growth and development of mammary glands like breasts and menstrual cycle preparation
Functions of progesterone
Thickening the lining of the uterus and maintaining pregnancy