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Biology Exam #2
Terms in this set (48)
All of the following are functions of bone EXCEPT which one
serving as an endocrine organ, secreting several different hormones
Bones are connected to other bones across a joint by
Bones continue to lengthen throughout childhood and adolescence because
a growth plate is present in each epiphysis until the late teens
Which one of the following statements is TRUE regarding parathyroid hormone (PTH)?
It causes the breakdown of bone
Which one of the following is the correct classification of vertebrae, from the skull to the pelvis?
cervical, thoracic, lumbar, sacral, coccygeal
Which one of the following bones articulates with the metatarsal bones?
Each of the following bones is part of the axial skeleton EXCEPT which one?
Which one of the following lists the bones of the arm from the fingertips to the shoulder joint?
phalanges, metacarpals, carpals, radius and ulna, humerus
Which one of the following disorders of the skeletal system results from the "wearing out" of the cartilage
Cardiac muscle differs from skeletal muscle in that
all cardiac muscle is under involuntary control
Skeletal muscle groups that work together to create the same movement are referred to as
In the lower leg, the gastrocnemius muscle bends the foot away from the knee, as in pointing one's toes. The tibialis anterior muscle flexes the foot toward the knee. These two muscles are
Which one of the following is found within a sarcomere?
the actin and myosin filaments
Contraction of a skeletal muscle cell is initiated by the
release of acetylcholine by a neuron terminating at the neuromuscular junction
The primary energy source used by muscle cells to generate ATP is
Muscle cells produce lactic acid when they have an inadequate supply of
Which one of the following activities would fast-twitch fibers be most useful for?
Following electrical stimulation of a muscle cell, calcium functions to
bind to the protein troponin
The left ventricle has a more muscular wall than the other three chambers of the heart because the left ventricle
must generate enough blood pressure to pump blood into the aorta and throughout the
The atrioventricular valves are closed when the
After blood flows through the right atrium of the heart, its next major destination is the
contain gap junctions that allow the signal to spread quickly through cardiac muscle cells
All of the following are ways in which blood functions to maintain homeostasis in the human body EXCEPT which one?
conducting action potentials that originate in the nervous system to help with cell-cell communication
About 55% of whole blood is ________, which is/are mostly made up of water.
Albumin, alpha globulin, beta globulin, and gamma globulin are all examples of
Which one of the following population of cells is most markedly increased during bacterial infections?
When the hormone erythropoietin is released in response to low oxygen levels, where is it transported to stimulate red blood cell production?
red bone marrow
Histamine is released from which one of the following types of leukocyte to stimulate the inflammatory response?
When a blood vessel gets damaged, contractions of smooth muscle referred to as ________ help constrict the vessel to reduce blood flow.
A scientist is interested in doing a research project on hemoglobin. From which one of the following could he extract the hemoglobin for his study?
red blood cells
Once a prion enters a nerve cell, it essentially
becomes self-propagating, causing misfolding of nearby normal proteins
Dead and injured white blood cells are removed from circulation by the
Which one of the following is directly involved in the process of blood clotting?
Which one of the following blood types can a person with blood type B safely receive in a blood transfusion?
B and O
What are muscles called that help you chew?
What muscles are used to close jaw?
Temporalis, medical pterygoid, and masseter
What muscles are used to open jaw?
What are muscles called that are used to breath?
Muscles of respiration
What muscles are used for quiet breathing?
Diaphragm (breath in) and passive process (breath out)
What is the increase in the number of red blood cells?
What is the decrease in the number of red blood cells?
What is the varying sizes of red blood cells?
What are blood cells that have different shapes called?
What are immature red blood cells called?
How long do red blood cells survive?
Survival time is 120 minutes, easy gas exhange
What is the percentage of whole blood that consist of red blood cells?
Men: 14-18 gm%
What can low hematocrit or hemoglobin indicate?
What can high hematocrit or hemoglobin indicate?
High elevation (less O2 in the atmosphere), risky because of increased blood viscosity
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