GRADE 10 BIOLOGY- SYSTEMS EXAM
QUESTIONS WITH CORRECT
ANSWERS
Anatomy of the respiratory system -
ANSWER-https://www.thatquiz.org/tq/practicetest?3x3990iyev9r
The nasal cavity - ANSWER-air is filtered warmed and moistened, mucus covers all
internal surfaces
the pharynx - ANSWER-location where air from nasal passage may meet air inhaled
through mouth
epiglottis - ANSWER-a muscular flap that closes when swallowing, to prevent food or
water from entering the trachea
larynx - ANSWER-located below the pharynx and top of trachea
voice box-vibrating cords that are under muscular control
trachea - ANSWER-10cm long tube made up of a 'V' shaped cartilage to prevent
-lined with cilia which sweep materials upwards
-divides into bronchi each leading to a lung
bronchi - ANSWER-branch into smaller tubes (bronchioles)
brochioles - ANSWER-walls lined with cilia and cartilage
end with 'grape-like' clusters of alveoli
alveoli - ANSWER-each alveolus covered with capillaries
tissues thin enough to let oxygen diffuse into air space
Gas Exchange in Lungs - ANSWER-Fresh inhaled air has a higher concentration of
oxygen so oxygen molecules diffuse from the airspace in the lungs to the
bloodstream
The bright red oxygen rich blood moves through the capillaries into the pulmonary
vein and back to the heart
Dark red carbon dioxide rich blood is pumped into the pulmonary arteries. This ends
up in the capillary surrounding the airspace in the alveoli
Carbon dioxide diffuses from the capillary across the alveolar membrane into the
airspace where it is exhaled from the lungs
Breathing - ANSWER-the act of inhaling and exhaling air to the gas exchange site
, Gas exchange - ANSWER-the transfer of oxygen molecules into the blood and
carbon dioxide molecules out
Cellular Respiration - ANSWER-the chemical process in the mitochondria by which
all living cells obtain usable enery
three ways in which air is changed as it is inhaled and exhaled - ANSWER-1.
Moistened
2. Warmed
3. Filtered
change in organs when breathing - ANSWER-rib movement: up and out-down and in
diaphragm: flattens out-curves up
Volume of Chest Cavity: Increases- Decreases
Change in pressure in chest cavity: Decreases below that of the air-increases above
that of the air
Major function of the circulatory system - ANSWER-is transportation and to help
maintain the body temperature by distributing heat
Cardiovascular system - ANSWER-a closed, pressured system with a pump, tubes
and one-way valves
Lymphatic System - ANSWER-an open drainage system of vessels and lymph
nodes
Arteries and Arterioles - ANSWER-carry blood away from the heart to the rest of the
body
Have thick, muscular walls that are elastic to withstand high pressure exerted by the
heart
purpose of smooth muscle tissue - ANSWER-contracts to mix stomach contents
nerves - ANSWER-to signal when we have enough to eat
explanation of heartburn - ANSWER-when you eat too quickly or are under a lot of
stress acid fluid from your stomach backs up into your esophagus because of a
leaky valve.
function of the pancreas (glands) - ANSWER-produces an important enzyme called
insulin. Insulin regulates the concentration of glucose (sugar) in the the blood.
Creates bicarbonate, which is a base that neutralizes stomach acid---> PH
purpose of exocrine tissue in the pacreas - ANSWER-produces pancreatic enzymes
for digestion
purpose of endocrine cells called islets of Langerhans - ANSWER-produce
hormones that regulate blood sugar and pancreatic secretions
Purpose of the liver - ANSWER-to dissolve fats and detoxify the blood
QUESTIONS WITH CORRECT
ANSWERS
Anatomy of the respiratory system -
ANSWER-https://www.thatquiz.org/tq/practicetest?3x3990iyev9r
The nasal cavity - ANSWER-air is filtered warmed and moistened, mucus covers all
internal surfaces
the pharynx - ANSWER-location where air from nasal passage may meet air inhaled
through mouth
epiglottis - ANSWER-a muscular flap that closes when swallowing, to prevent food or
water from entering the trachea
larynx - ANSWER-located below the pharynx and top of trachea
voice box-vibrating cords that are under muscular control
trachea - ANSWER-10cm long tube made up of a 'V' shaped cartilage to prevent
-lined with cilia which sweep materials upwards
-divides into bronchi each leading to a lung
bronchi - ANSWER-branch into smaller tubes (bronchioles)
brochioles - ANSWER-walls lined with cilia and cartilage
end with 'grape-like' clusters of alveoli
alveoli - ANSWER-each alveolus covered with capillaries
tissues thin enough to let oxygen diffuse into air space
Gas Exchange in Lungs - ANSWER-Fresh inhaled air has a higher concentration of
oxygen so oxygen molecules diffuse from the airspace in the lungs to the
bloodstream
The bright red oxygen rich blood moves through the capillaries into the pulmonary
vein and back to the heart
Dark red carbon dioxide rich blood is pumped into the pulmonary arteries. This ends
up in the capillary surrounding the airspace in the alveoli
Carbon dioxide diffuses from the capillary across the alveolar membrane into the
airspace where it is exhaled from the lungs
Breathing - ANSWER-the act of inhaling and exhaling air to the gas exchange site
, Gas exchange - ANSWER-the transfer of oxygen molecules into the blood and
carbon dioxide molecules out
Cellular Respiration - ANSWER-the chemical process in the mitochondria by which
all living cells obtain usable enery
three ways in which air is changed as it is inhaled and exhaled - ANSWER-1.
Moistened
2. Warmed
3. Filtered
change in organs when breathing - ANSWER-rib movement: up and out-down and in
diaphragm: flattens out-curves up
Volume of Chest Cavity: Increases- Decreases
Change in pressure in chest cavity: Decreases below that of the air-increases above
that of the air
Major function of the circulatory system - ANSWER-is transportation and to help
maintain the body temperature by distributing heat
Cardiovascular system - ANSWER-a closed, pressured system with a pump, tubes
and one-way valves
Lymphatic System - ANSWER-an open drainage system of vessels and lymph
nodes
Arteries and Arterioles - ANSWER-carry blood away from the heart to the rest of the
body
Have thick, muscular walls that are elastic to withstand high pressure exerted by the
heart
purpose of smooth muscle tissue - ANSWER-contracts to mix stomach contents
nerves - ANSWER-to signal when we have enough to eat
explanation of heartburn - ANSWER-when you eat too quickly or are under a lot of
stress acid fluid from your stomach backs up into your esophagus because of a
leaky valve.
function of the pancreas (glands) - ANSWER-produces an important enzyme called
insulin. Insulin regulates the concentration of glucose (sugar) in the the blood.
Creates bicarbonate, which is a base that neutralizes stomach acid---> PH
purpose of exocrine tissue in the pacreas - ANSWER-produces pancreatic enzymes
for digestion
purpose of endocrine cells called islets of Langerhans - ANSWER-produce
hormones that regulate blood sugar and pancreatic secretions
Purpose of the liver - ANSWER-to dissolve fats and detoxify the blood
