BIOS EXAM #3 WITH
1120 ANSWERS
CORRECT
2025
Muscle ( correct answers ) a contractile tissue consisting of 3 distinct
cell types
The three types of muscle ( correct answers ) - Cardiac
cells Muscle
- Smooth Muscle
- Skeletal Muscle
What types of muscle are ( correct answers ) skeletal and
striated? cardiac
What types of muscle are voluntary? ( correct answers )
skeletal
What types of muscle are uninucleated? ( correct answers
Put
) in order form smallest to largest (muscle
smoothfiber,
and cardiac ( correct
myofibril, muscle) answers
) 1. Myofibrils
2. Muscle
Fiber
The functional unit of muscle contraction is called...
3.Muscle ( correct
answers ) Sarcomere
The basis of muscle contraction ( correct answers )
Sliding filament theory
originates in the spinal cord and extends their axons to
to
muscle fibers.through
propagate The place where thein muscle ( correct
muscle fibers answers
meet the )
skeletal
cells.
muscle neurons
is called the 1. Motor
2. Neuromuscular junction
. There it releases acetylcholine and causes an
3. T-tubes
action potential
True or false: You need calcium to cause conformational change so that
tropomyosin moves and allows myosin-binding site on active molecules to
be open and available for cross-bridge formation ( correct answers )
True
What do you need for muscle contraction? ( correct answers )
Calcium and ATP
tendons vs ligaments ( correct answers ) Tendons: Attach
muscle to bone Ligaments: Attach bone to bone
, Circulatory systems transport and throughout the animal
body ( correct answers ) nutrients and gases
True or false: In closed circulatory systems blood is not enclosed in blood
vessels but itpumped into a cavity ( correct answers ) False
Advantage of open circulatory system... ( correct answers ) Does not
use as much energy as a closed system to maintain or operate
In blood circulates unidirectionally and can be directed
towards specific tissues and organs when needed ( correct answers )
Closed circulatory systems
Cardiac cycle ( correct answers ) Coordination of the filling and emptying of
the heart of blood by electrical signals that cause the heart muscles to relax
and contract
Systole ( correct answers ) Heart contracts pushing out the blood and
pumping it through the body
Diastole ( correct answers ) Relaxation phase where the heart fills with
blood
True or false: Arteries carry nutrient rich blood away from the heart
( correct answers ) True
These are so thin that they're only a single cell layer thick and allow for
exchange ofnutrients with the cells they interact ( correct
answers ) Capillaries
Veins ( correct answers ) Low pressure system that returns blood to
the heart
is distributed
Blood to the
is pumped rest ofthe
through theveins
( correct answers )circuit
of the systemic 1. Right
into the ,
body atrium
then into the right ventricle. Blood enters the and is oxygenated by the
2. Right ventricle
.Pulmonary circuit, blood reenters the heart through the .
3. Lungs
From the blood reenters the systemic circuit through the and
4. Left atrium
5. Left ventricle
6. Aorta
In the rate of contraction the nervous system is responsible for
slowing down orspeeding up via the internal ( correct
answers ) Pacemaker
Blood is made up ( correct answers ) -
of... Plasma
- White blood cells
- Platelets
1120 ANSWERS
CORRECT
2025
Muscle ( correct answers ) a contractile tissue consisting of 3 distinct
cell types
The three types of muscle ( correct answers ) - Cardiac
cells Muscle
- Smooth Muscle
- Skeletal Muscle
What types of muscle are ( correct answers ) skeletal and
striated? cardiac
What types of muscle are voluntary? ( correct answers )
skeletal
What types of muscle are uninucleated? ( correct answers
Put
) in order form smallest to largest (muscle
smoothfiber,
and cardiac ( correct
myofibril, muscle) answers
) 1. Myofibrils
2. Muscle
Fiber
The functional unit of muscle contraction is called...
3.Muscle ( correct
answers ) Sarcomere
The basis of muscle contraction ( correct answers )
Sliding filament theory
originates in the spinal cord and extends their axons to
to
muscle fibers.through
propagate The place where thein muscle ( correct
muscle fibers answers
meet the )
skeletal
cells.
muscle neurons
is called the 1. Motor
2. Neuromuscular junction
. There it releases acetylcholine and causes an
3. T-tubes
action potential
True or false: You need calcium to cause conformational change so that
tropomyosin moves and allows myosin-binding site on active molecules to
be open and available for cross-bridge formation ( correct answers )
True
What do you need for muscle contraction? ( correct answers )
Calcium and ATP
tendons vs ligaments ( correct answers ) Tendons: Attach
muscle to bone Ligaments: Attach bone to bone
, Circulatory systems transport and throughout the animal
body ( correct answers ) nutrients and gases
True or false: In closed circulatory systems blood is not enclosed in blood
vessels but itpumped into a cavity ( correct answers ) False
Advantage of open circulatory system... ( correct answers ) Does not
use as much energy as a closed system to maintain or operate
In blood circulates unidirectionally and can be directed
towards specific tissues and organs when needed ( correct answers )
Closed circulatory systems
Cardiac cycle ( correct answers ) Coordination of the filling and emptying of
the heart of blood by electrical signals that cause the heart muscles to relax
and contract
Systole ( correct answers ) Heart contracts pushing out the blood and
pumping it through the body
Diastole ( correct answers ) Relaxation phase where the heart fills with
blood
True or false: Arteries carry nutrient rich blood away from the heart
( correct answers ) True
These are so thin that they're only a single cell layer thick and allow for
exchange ofnutrients with the cells they interact ( correct
answers ) Capillaries
Veins ( correct answers ) Low pressure system that returns blood to
the heart
is distributed
Blood to the
is pumped rest ofthe
through theveins
( correct answers )circuit
of the systemic 1. Right
into the ,
body atrium
then into the right ventricle. Blood enters the and is oxygenated by the
2. Right ventricle
.Pulmonary circuit, blood reenters the heart through the .
3. Lungs
From the blood reenters the systemic circuit through the and
4. Left atrium
5. Left ventricle
6. Aorta
In the rate of contraction the nervous system is responsible for
slowing down orspeeding up via the internal ( correct
answers ) Pacemaker
Blood is made up ( correct answers ) -
of... Plasma
- White blood cells
- Platelets
