Skeletal
how many bones does the axial skeleton have?
80
What are the names of the chambers of the heart?
atriums and ventricles
An individual who has had chicken pox rarely gets the disease again. This situation is an example of
A. biological control
B. negative feedback
C. active immunity
D. passive immunity
c
What are the three main types of muscle tissue in the human body, and where are they typically found?
skeletal muscle, smooth muscle , cardiac muscle
what is the length of the digestive system
30 feet
Which type of bone is classified as the vertebrae of a human?
irregular
The tricuspid valve has ________ flaps that open and close
four
One similarity between cell receptors and antibodies is that both
A. are produced by nerve cells
B. are highly specific in their actions
C. slow the rates of chemical reactions
D. are involved in digestion
B
Explain the difference between the origin and insertion of a muscle, and how they relate to muscle movement
converging their muscle fibers into a single tendon
Which of these best maintains intestinal health?
A. Starches
B. Vitamins
C. Fiber
D. Fat
C. Fiber
In a human how many bone does the average adult have in there spine
33
After receiving oxygen from the lungs, blood returns to the heart through the left
atrium
If a human system fails to function properly, what is the most likely result?
A. a stable rate of metabolism
B. a disturbance in homeostasis
C. a change in the method of cellular respiration
D. a change in the function of DNA
B
What is the role of the neuromuscular junction in muscle contraction?
transmit a nervous impulse from the brain to the muscle
what causes ulcers?
backteria, and stress
How many bones does the appendicular skeleton have
126
The most important purpose of the valves in the heart is to
allow blood to flow in one direction
A function of white blood cells is to
A. transport oxygen to body cells
B. produce hormones that regulate cell communication
C. carry glucose to body cells
D. protect the body against pathogens
D
How do the muscles of the quadriceps femoris work together to extend the knee joint?
nverging their muscle fibers into a single tendon
Which of the following organs has 3 layers of smooth muscle in its muscularis externa?
stomach
What type of bone are the ribs, sternum, and scapulae?
flat bones
Once blood has been oxygenated, it is pumped out of the heart by the left ventricle into the _________, where it travels to the rest of the body
aorta
Certain microbes, foreign tissues, and some cancerous cells can cause immune responses in the human body because all three contain
A. antigens
B. enzymes
C. fats
D. cytoplasm
A
What is the primary function of the diaphragm muscle, and how does it contribute to breathing?
breathing by contracting and flattening when inhaling, which increases the space in the chest cavity and allows air to fill the lungs
Chemical digestion of carbohydrates begins in the
oral cavitys