You have
air passages that consist of nasal passages, an oral cavity, throat (pharynx), a
trachea and two
bronchi .
You have
two lungs consisting of thousands of air sacs called
alveoli . This increases the area of the lungs to the size of a badminton court.
The
diaphragm and
intercostal muscles.
Class activity: study of the lungs of a sheep or a pig
If possible, your educator should have the lungs of a sheep or a pig in the classroom for you to examine while working through this unit.
the human respiratory system
Processes:
There are other systems besides the digestive system that are important for the effective functioning of the body. We will examine the systems for respiration, excretion, propulsion and reproduction, as well as the skeleton.
Every cell in the body of a living organism needs oxygen for
RESPIRATION . It is the
ENERGY-GIVING PROCESS during which glucose is “burned” in the presence of oxygen. The waste product of this process is carbon dioxide.
The part of the cell where this occurs, is the
mitochondria .
These substances get to and from the cells by means of the bloodstream.
BREATHING and
EXCHANGE OF GASES are the processes by which oxygen arrives in the blood and carbon dioxide leaves the blood.
BREATHING: the process by which air moves into and out of the lungs with the help of muscle action. The process of breathing in, or inhalation, is also known as
INSPIRATION and breathing out, or exhalation, is known as
EXPIRATION .
EXCHANGE OF GASES : The process by which gases such as carbon dioxide in the blood and oxygen that is in the air in the lungs are exchanged to get oxygen into the blood and to the cells.
RESPIRATION : the energy-giving process that occurs in the mitochondria in cells. Often people use the term Respiration incorrectly when they mean breathing.
Adaptations that facilitate these processes:
for
BREATHING , we have a
DIAPHRAGM, a muscular partition below the lungs that separates the thoracic and abdominal cavities and contracts and relaxes to alter pressure in the thoracic cavity. There are also
INTERCOSTAL MUSCLES that raise and lower the ribcage.
for
GASEOUS EXCHANGE in the lungs, there are thousands of air sacs, or ALVEOLI, with very thin, moist walls filled with blood vessels.
for
GASEOUS EXCHANGE in the tissues there are fine blood capillaries that extend to each cell, and
tissue fluids that surround the cells and the mitochondria.
EXPLAIN EACH OF THE ADAPTATIONS IN THE TABLE:
Diaphragm
Intercostal muscles
Thousands of alveoli
Thin-walled blood capillaries
Alveoli with single-layer epithelia
Mucus membrane with cilia
Class assignment: DRAWING
Make a sketch to illustrate the alveoli and the blood capillaries that facilitate the movement of gases.
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
When MP₁ becomes negative, TP start to decline.
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Economic growth as an increase in the production and consumption of goods and services within an economy.but
Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has
The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50.
A,Calculate quantities of x and y which maximize utility.
B,Calculate value of Lagrange multiplier.
C,Calculate quantities of X and Y consumed with a given price.
D,alculate optimum level of output .
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
