Bio 253 Quiz 1 Exam, Most Recent Exam 2026 Actual
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the integumentary system is composed of what? -
Answers-skin, hair, sebaceous (oil) glands, sudoriferous
(sweat) glands, nails, and sensory receptors
what are the functions of the integumentary system? -
Answers-protection, thermoregulation, vitamin D
synthesis, and detecting sensations
the skeletal system consists of what? - Answers-bones,
joints, and associated cartilages
what are the functions of the skeletal system? - Answers-
supports and protects body and provides surface area for
muscle attachment
what do bones contain that is a hemopoietic tissue that
forms red blood cells? - Answers-red bone marrow
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at birth, there are approximately ___ bony elements that
fuse to form the approximately ___ bones in the adult
skeleton - Answers-270; 206
the skeleton is divided into what two categories? -
Answers-axial skeleton and appendicular skeleton
has 80 bones including the bones of the cranium (bones
protecting the skull), face, hyoid, auditory ossicles,
vertebral column, sternum, and ribs - Answers-axial
skeleton
consists of 126 bones including the bones of the pectoral
and pelvic girdles, upper limbs, and lower limbs - Answers-
appendicular skeleton
are longer than they are wide and consist of a diaphysis,
or shaft, formed by compact bone. - Answers-long bones
are roughly cube-shaped and somewhat equal in length
and width - Answers-short bones
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are generally thin and consist of two parallel plates of
compact bone with an inner layer of spongy bone
trabeculae; provide extensive area for muscle attachment
- Answers-flat bones
develop between tendons and ligaments and do not
articulate with other bones; commonly develop around the
thumb and big toe in males and usually are not more than
a few millimeters in size - Answers-sesamoid bones
also called structural bones because they are small bones
that occur in the sutures between the plates of the skull;
number of this type of bone varies greatly between
individuals and some people lack them - Answers-
workman bones
include vertebrae, hip bones, several facial bones, and
calcaneus (heel bone); have complex shapes and do not
fit into any other category of classification - Answers-
irregular bones
narrow split between adjacent parts of bones through
which blood vessels or nerves pass - Answers-fissure
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what is an example of a fissure? - Answers-superior orbital
fissure of the sphenoid bone
hole; opening through which blood vessels, nerves, or
ligaments pass - Answers-foramen
what is an example of a foramen? - Answers-optic
foramen of the sphenoid bone
trench; shallow depression - Answers-fossa
what is an example of a fossa? - Answers-coronoid fossa
of the humerus
groove; furrow along a bone surface that accommodates a
blood vessel, nerve, or tendon - Answers-sulcus
what is an example of a sulcus? - Answers-intertubercular
sulcus of the humerus
passageway; tubelike opening - Answers-meatus