lecture 17 practice questions Flashcards
Where are RBC’s made?
a. In red bone marrow
b. In yellow bone marrow
c. In bone tissue
d. In lymphatic tissue
a. in red bone marrow
Which of the following is NOT a major blood component?
a. Plasma
b. Plasma proteins
c. Platelets
d. Red blood cells
e. White blood cells
b. plasma proteins
Which of the following is NOT true about RBC’s:
a. Mature RBC’s do not have a nucleus
b. Mature RBC’s are filled with a transport protein called hemoglobin
c. Mature RBC’s can replicate after getting released into circulation
d. RBC’s last about 120 days
c. mature RBC’s can replicate after getting released into circulation
Which of the following is correct about the structure of Hemoglobin?
a. Hemoglobin is composed of 4 protein units, 4 heme groups, and 4 iron atoms
b. Oxygen gets attached to the iron atom in the hemoglobin molecule
c. Hemoglobin turns bright red, when it carries oxygen
d. Deoxygenated hemoglobin looks dark red
e. All of the above are true
e. all of the above are true
Which of the following is NOT true about Carbon Monoxide?
a. CO is a poisonous gas
b. CO permanently occupies the hemoglobin molecule
c. CO makes hemoglobin unavailable to carry oxygen
d. CO denatures the red blood cells
d. CO denatures the red blood cells
Which of the following Hgb levels indicate anemia in a female patient?
a. 14.0
b. 12.7
c. 9.9
d. 13.1
c. 9.9
Small RBC anemia is caused by:
a. Deficiency of Iron
b. Deficiency of Folate
c. Deficiency of Vitamin E
d. Deficiency of Vitamin B12
a. deficiency of iron
Pernicious anemia is caused by:
a. Lack of Intrinsic factor
b. Poor Folate intake
c. Blood loss due to hemorrhaging
d. Vegan diet
a. Lack of intrinsic factor
Folate deficit can cause:
a. Megaloblastic anemia
b. Microcytic anemia
c. Pale RBC’s
d. Premature breakdown of RBC’s
a. megaloblastic anemia
If a patient is diagnosed with Microcytic anemia, he/she should increase
intake of:
a. Oranges
b. Meat products
c. Dairy products
d. B12 supplements
e. Folate supplements
b. meat products
Which of the following is NOT true about Malaria?
a. It is more prevalent in countries with a tropical climate and lots of
wetlands
b. It is caused by mosquito bites
c. When Plasmodium vivax enters the blood of the human victim, its spores
settle in the host’s liver within 30 minutes
d. The P. vivax spores germinate, becoming adult P. vivax cells that enter
the blood stream, attacking the host’s RBC’s
e. The Paroxy
b. it is caused by mosquito bites
Sickle cell disease is most common among this population:
a. Asian
b. European
c. Indian
d. African
e. Latin
d. african
Sickle cell disease is caused by
a. Homozygous genotype coding for Malaria resistance, resulting in
abnormally shaped Hgb molecule
b. Heterozygous genotype coding for Malaria resistance, resulting in
normally shaped Hgb molecule
c. Prior exposure to Malaria-causing parasite P. vivax, resulting in the
change of Hgb molecule
d. X-linked genetic disorder, resulting in the abnormally shaped RBC’s
a. Homozygous genotype coding for Malaria resistance, resulting in
abnormally shaped Hgb molecule
The following is an observed complication of Sickle Cell Anemia:
a. Enlarged spleen
b. Jaundice
c. Severe pain
d. Retinopathy
e. All of the above
e. all of the above
Hemorrhagic anemia can result from:
a. Internal bleeding
b. Trauma
c. Surgery
d. Burst aneurysm
e. All of these
e. all of these
Muscle fascicle is a group of:
a. Muscle fibers, or cells
b. Muscles
c. Tendons
d. Endomysiums
a. muscle fibers, or cells
Each muscle is surrounded by a layer of fibrous connective tissue, called:
a. Endomysium
b. Epimysium
c. Perimysium
d. Hypomysium
b. epimysium
Skeletal muscles are attached to bones via:
a. Ligaments
b. Tendons
c. Muscle fibers
d. None - they are not attached to bones
b. tendons
Which of the following is NOT true about muscle contraction?
a. Muscle fibers consist of fine fibers called myofibrills
b. Myofibrils are made of short units called Sarcomeres
c. Sarcomeres are made of Actin and Myosin filaments
d. Actin and Myosin filaments are constantly in contact with each other
d. actin and myosin filaments are constantly in contact with each other
The following is true about cross-bridge formation between actin and myosin:
a. It happens when calcium ions are inside the sarcoplasmic reticulum
b. It allows actin and myosin to move against each other
c. It causes the sarcomeres to stretch
d. It causes Myofibrils to get longer
a. it happens when calcium ions are inside the sarcoplasmic reticulum
Which of the following does NOT happen during a muscle contraction?
a. The myosin form cross bridges with actin filaments
b. Calcium is released from sarcoplasmic reticulum
c. Calcium channels close
d. The sarcomeres contract
c. calcium channels close
A muscle fascicle is:
a. A bunch of myofibrils
b. A bunch of sarcomeres
c. A bunch of muscle fibers
d. A bunch of muscles
e. A bunch of fascia
c. a bunch of muscle fibers
Which of the following is NOT true about muscle tendons?
a. They attach muscle to the bone’s periosteum
b. They are composed of fibrous connective tissue
c. They are a collection of CT surrounding muscle fascicles and the entire
muscle
d. They contain muscle fibers
The muscle that flexes the forearm is:
a. Biceps brachii
b. Triceps brachii
c. Brachioradialis
d. Deltoid
a. Biceps brachii
