Chapter20

Which of the following things would you expect to happen if a knee joint was formed without any cartilage?

Bones within the knee would experience friction.

Which of the following statements about cardiac muscle is true?

Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle.

A collage student tracks his diet for several weeks as part of a nutritian project during the tracking period he realized that his diet is rich in yellow and oragne fruties and vegtables lbla bla bla which vitamine is dificialnt

K

One of the most common knee injuries is the tearing of the anterior cruciate ligament (ACL). How would an injury like this affect the function of the knee?

Ligaments hold the bones of the knee in the proper orientation. Tearing the ligament could disrupt the alignment of the knee, making the knee difficult to bend.

Which of the following statements about what happens during a muscle contraction is true?

Myosin filaments slide along actin filaments.

Which of the following statements about myofibrils is true?

They contain many sarcomeres.

Vanessa has been lifting weights to increase strength in her arms. Which of the following statements about the muscles she is strengthening is true?

They have tendons that are connected to bones.

If an athlete damages a ligament in his or her knee, he or she has damaged

a connection between two bones.

As a muscle contracts, which of the following things happens?

a. The Z disks move closer together.

the lower region of the small intestine is structured to create large amounts of surface area so that it can more effectivly

absorbe chemical buidlign blocks that are produced by digestion

the human liver produces bile a substance that

allows fats to dissovle more easlily

which statemetb about amico acids that required for adults is true

amino acids are the bilding blocks of protiens

pancreatic canter is dangerous becuase the pancreas is

an organ tha tmanufactures many differnt kinds of digestive enzymes

The knee is part of the ________ skeleton, which is designed primarily for

appendicular; motion

. Bending your elbow involves

b. the use of voluntary muscles.

as an experiment a perosn who wishes to avoid getting ill during the winter signifiaclty boosts his viatimin intake this action could

be dangerouse because human body needs vitamines in small amounts

structure in highlighted kneww jiont is a

bone

If a drug attacked and destroyed involuntary muscle cells only, which of the following body functions would be affected?

c. movement of materials through the digestive system

nutrients move across villus most nutirnat sabsorbed by

capillaries

the function of the esophagus is to

carry food to stomach

After certain knee injuries, patients experience a swelling because of an accumulation of fluid within the knee. This condition is referred to as "water on the knee." Which of the following is a likely source of this fluid?

d. the synovial sac

Liver secretes bile to the

galbladder

Where in the body would you expect to find voluntary muscle that has a banded appearance

in a muscle that bends the knee

advantage of the villi that line the small intestin is

inc the sureface area availible for food absorption

babies may recive and injection of vitamine k at birth which of the follwoing is likely reason why an injection of vitamine k would be given

k is required to prevent bleeding and babies are born with low levels of this vitamine

which of the following sequences correctly describes the journy of a potato chip through digestion

moth - Esopha stomage small intestine large intestinge anus

Muscle contraction is caused by

myosin filaments sliding along actin filaments

site wher emost digestion and nutrient absorption

outer intestine(large)

Axial

protection

genetic mutiation ahs altered a signaling molecule found embeedded iwthin cell membrains this signaling molecule is most likely a

protien

if you were a bird about to embark on a long migratory gerny whihch nutrient

protiens

the advantage of chewing food is that htis proces

provides mechanical digestion and inc the surface area of the food for further digestion

Minearls are

required by the human body in small amounts

Which of the following sequences correctly describes the organization of muscle tissue from smallest to largest component?

sarcomeres to myofibrils to muscle fibers

The power that moves food along your esophagus comes from

smooth muscle.

which of the following wouldn not be found in lower small intestine

smooth surface

The most likely potential problem faced by a person who is following a low protien diet is the failure to

take in enough essential amino acids

food passing through our digestive tract would contain the fewest nutrients when it reaches which of the following organs

the large intestine

how rapidly an organism can absorb nutrients generally depends on

the serfacae area for absorption

which organ play role in vitamine d

the skin

which statment best explains why starch molecutles must be broken down before they can be absorbed by small intsestine

they are too large to pass through plasma membraine

straight ass muscle fiber form the figure

under contias controll

carbohydreates and fats are both

used as energy sources

which of the following vitamins is not associated with building or maintaining bones and teeth

vitamine D

which nutriens have the lowest energy content per gram

vitamines