Lab Practical 1 Flashcards
What works with the nervous system to coordinate the activity of cells in order to control growth and homeostasis in the body?
- Influences metabolic activities of cells by means of hormones transported in the blood to target cells
The Endocrine system
Responses in the endocrine system occur more _______ but tend to last ________ than those of the nervous system
Slowly; longer
What is the endocrine system composed of?
endocrine glands and endocrine tissue
An organ that secrets one or more chemical messenger (hormone)
endocrine gland
What are examples of endocrine glands?
Thyroid, adrenal, pituitary, parathyroid, and pineal. (TAPPP)
What are examples of endocrine tissue?
Pancreas, adipose, thymus, hypothalamus, heart, kidneys, gastro-intestinal and gonads. (PATHH K GIG)
How does the adrenal medulla make adrenaline and noradrenalin
Start with the amino acid tyrosine
Why is tyrosine so important?
It makes epinipherine, norepinephrine, dopamine, melanin, and the thyroid hormones T3 and T4
If the amino acid phenylalnine cannot be converted into tyrosine, __ / _______________ will result
PKU; Phenylketonuria
What is Phenylketonuria
a genetic disorder caused by the mutation in the gene for the liver enzyme (PAH) rendering it nonfunctional
True or False: The pancreas is an endocrine and exocrine gland?
True
What is the endocrine function of the pancreas
to release insulin (glucose in the cells) and Glucagon (glucose gone from the cells)
Insulin ______ blood glucose and glucagon ______ blood glucose
decreases; increases
Produce estrogen and progesterone during puberty
Female - ovaries
- Promotes maturation of the reproductive organs and breast
- promotes cyclic changes in the uterine lining during menstruation
- Prepare mammary gland for lactation
Estrogen
- promote cyclic changes in the uterine lining during menstruation
- quiets uterine muscle during pregnancy
- prepares breast tissue for lactation
Progesterone
Produce testosterone during puberty
1. promote maturation of the reproductive systems
- development of male secondary sex characteristics
- responsible for sex drive
Male - testes
What are the characteristics of blood
- viscous
- bright red when oxygenated
- dark red when deoxygenated
- a connective tissue
- 55% plasma (>90% water)
- 45% formed elements
how many liters of blood do males have versus females?
Male = 5-6 L
Female = 4-5 L
90% water
contains salts ( Na, K, Mg, Cl, and HC03-)
Proteins ( albumin, fibrinogen, antibodies)
Nutrients, waste, gases, hormones
Plasma (55% of blood)
Contains:
Erythrocytes (45%)
Leucocytes ( <1%)
platelets (<1%)
Formed elements
How many days does it take a neutrophil to develop and what is tis life span
D: 14days
LS: 6hrs -few
How many days does it take a Esoinophil to develop and what is its life span
D: 14 days and
LS: 5days