Biology 2401 Exam 2 Study Guide Questions | 2026/2027 |
Answers Correct | With Complete Solutions
appendicular skeleton Correct Answers Bones of the limbs and
limb girdles that are attached to the axial skeleton
Are apocrine glands really apocrine? Correct Answers
Apocrine glands in the skin and eyelid are sweat glands. They
are exocytosis. Most apocrine glands in the skin are in the
armpits, the groin, and the area around the nipples of the breast.
Apocrine glands in the skin are scent glands, and their secretions
usually have an odor.
Are sebaceous glands active in children? Correct Answers The
sebaceous glands in newborns are enlarged owing to maternal
hormones, but within months, the glands shrink. Inactive in
childhood.
axial skeleton Correct Answers Portion of the skeletal system
that consists of the skull, rib cage, and vertebral column
Bones of the foot Correct Answers Tarsals (7)
Metatarsals (5)
Phalanges (14)
Bones of the hand and wrist Correct Answers Your wrist is
made up of eight small bones (carpal bones) plus two long bones
in your forearm — the radius and the ulna. Each finger consists
of one hand bone (metacarpal) and three finger bones
(phalanges), while each thumb consists of one metacarpal bone
and two phalanges.
,compact bone structure Correct Answers Osteon or harvesian
system
-osteocytes arranged in concentric layers
-central or harvesian canal (contains 1+blood vesels&nerves,
source of blood flow in bones)
-perforating or volkmanns cannals (perpendicular to central
cannals, branches off central cannals)
-Lamellae from nested cylinders
-collagen fibers adds strength and resiliency
Craniostenostosis? What does this cause in the skull? Why is
this physiologically (not cosmetically) harmful? Why would you
need to wear a helmet afterwards? Correct Answers
Craniosynostosis, or simply synostosis, is the early growing
together (or fusion) of two or more bones (sutures) of the skull.
Synostosis interferes with normal growth of the brain and skull.
cranium bones Correct Answers Single occipital,
frontal,ethmoid and sphenoid and the paired parietal, temporal
and ossicles of the ear (malleus, incus and stapes)
Cranium markings Correct Answers The frontal bone,
zygomatic bone, maxilla, ethmoid bone and mandible make up
the anterior view of the skull.
Describe how a wound heals in the epidermis? Does it bleed?
Why or why not? Correct Answers Blood cells arrive to start
building new skin. They give your wound the oxygen and
nutrients it needs to heal and grow new blood vessels. Chemical
messengers' direct cells to make collagen, a protein that acts like
,scaffolding to rebuild the damaged area. The epidermis is
avascular.
Difference and function between red and yellow bone marrow?
Where are they found? Is yellow bone marrow found in
newborns? Correct Answers The red bone marrow has an
important role in the production of red blood cells, white blood
cells, and platelets. Red bone marrow is also known as medulla
ostium rubra. The yellow bone marrow is yellow colored tissue
that can be found in the hollow parts of compact bones. yellow
bone marrow is not found in newborns.
Difference between female and male pelvis Correct Answers
The female pelvis is larger and broader than the male pelvis,
which is taller (owing to a higher iliac crest), narrower, and
more compact. The distance between the ischium bones is small
in males. ... This results in the female inlet being large and oval
in shape, while the male inlet is more heart shaped.
Difference between osteoblasts and osteoclasts? Correct
Answers Osteoclasts and osteoblasts are both kinds of bone
cell. Their difference lies with their functions. Osteoblasts are
the kind of bone cells responsible for the bone formation. It is
also responsible for the mineralization of the bone structure.
Osteoclasts are type of bone cells that removes bone tissue by
removing the mineral matrix of the bone and dissolving the
collagen part of the bone. This process is also called as bone
resorption where in the bone is broken down and the mineral, for
example calcium, is transferred to the blood. Osteoblasts and
osteoclasts regulate the amount of bone tissue. Osteoblasts
forms the bone while osteoclasts re-absorb.
, Difference between primary and secondary curves of
development, why does the 2nd curve develop? Correct
Answers Primary curves are retained from the original fetal
curvature, while secondary curvatures develop after birth. ...
Secondary curves are concave posteriorly, opposite in direction
to the original fetal curvature. The cervical curve of the neck
region develops as the infant begins to hold their head upright
when sitting.
Difference between sunscreen and sunblock. Correct Answers
The main difference between sunscreen and sunblock lies in
how they protect the skin against harmful UV rays. Sunblock is
so named because it literally blocks UV rays by forming a
physical shield, while a sunscreen absorbs them. ... Sunscreen,
on the other hand, is the chemical kind that absorbs the UVA
rays.
Difference in an open, comminuted, greenstick, and impacted
fracture Correct Answers Greenstick - A partial fracture in
which one side of the bone is broken and the other side bends;
similar to the way a green twig breaks on one side while the
other side stays whole, but bends; occurs only in children, whose
bones are not fully ossified and contain more organic material
than inorganic material.
Impacted - One end of the fractured bone is forcefully driven
into the interior of the other.
Answers Correct | With Complete Solutions
appendicular skeleton Correct Answers Bones of the limbs and
limb girdles that are attached to the axial skeleton
Are apocrine glands really apocrine? Correct Answers
Apocrine glands in the skin and eyelid are sweat glands. They
are exocytosis. Most apocrine glands in the skin are in the
armpits, the groin, and the area around the nipples of the breast.
Apocrine glands in the skin are scent glands, and their secretions
usually have an odor.
Are sebaceous glands active in children? Correct Answers The
sebaceous glands in newborns are enlarged owing to maternal
hormones, but within months, the glands shrink. Inactive in
childhood.
axial skeleton Correct Answers Portion of the skeletal system
that consists of the skull, rib cage, and vertebral column
Bones of the foot Correct Answers Tarsals (7)
Metatarsals (5)
Phalanges (14)
Bones of the hand and wrist Correct Answers Your wrist is
made up of eight small bones (carpal bones) plus two long bones
in your forearm — the radius and the ulna. Each finger consists
of one hand bone (metacarpal) and three finger bones
(phalanges), while each thumb consists of one metacarpal bone
and two phalanges.
,compact bone structure Correct Answers Osteon or harvesian
system
-osteocytes arranged in concentric layers
-central or harvesian canal (contains 1+blood vesels&nerves,
source of blood flow in bones)
-perforating or volkmanns cannals (perpendicular to central
cannals, branches off central cannals)
-Lamellae from nested cylinders
-collagen fibers adds strength and resiliency
Craniostenostosis? What does this cause in the skull? Why is
this physiologically (not cosmetically) harmful? Why would you
need to wear a helmet afterwards? Correct Answers
Craniosynostosis, or simply synostosis, is the early growing
together (or fusion) of two or more bones (sutures) of the skull.
Synostosis interferes with normal growth of the brain and skull.
cranium bones Correct Answers Single occipital,
frontal,ethmoid and sphenoid and the paired parietal, temporal
and ossicles of the ear (malleus, incus and stapes)
Cranium markings Correct Answers The frontal bone,
zygomatic bone, maxilla, ethmoid bone and mandible make up
the anterior view of the skull.
Describe how a wound heals in the epidermis? Does it bleed?
Why or why not? Correct Answers Blood cells arrive to start
building new skin. They give your wound the oxygen and
nutrients it needs to heal and grow new blood vessels. Chemical
messengers' direct cells to make collagen, a protein that acts like
,scaffolding to rebuild the damaged area. The epidermis is
avascular.
Difference and function between red and yellow bone marrow?
Where are they found? Is yellow bone marrow found in
newborns? Correct Answers The red bone marrow has an
important role in the production of red blood cells, white blood
cells, and platelets. Red bone marrow is also known as medulla
ostium rubra. The yellow bone marrow is yellow colored tissue
that can be found in the hollow parts of compact bones. yellow
bone marrow is not found in newborns.
Difference between female and male pelvis Correct Answers
The female pelvis is larger and broader than the male pelvis,
which is taller (owing to a higher iliac crest), narrower, and
more compact. The distance between the ischium bones is small
in males. ... This results in the female inlet being large and oval
in shape, while the male inlet is more heart shaped.
Difference between osteoblasts and osteoclasts? Correct
Answers Osteoclasts and osteoblasts are both kinds of bone
cell. Their difference lies with their functions. Osteoblasts are
the kind of bone cells responsible for the bone formation. It is
also responsible for the mineralization of the bone structure.
Osteoclasts are type of bone cells that removes bone tissue by
removing the mineral matrix of the bone and dissolving the
collagen part of the bone. This process is also called as bone
resorption where in the bone is broken down and the mineral, for
example calcium, is transferred to the blood. Osteoblasts and
osteoclasts regulate the amount of bone tissue. Osteoblasts
forms the bone while osteoclasts re-absorb.
, Difference between primary and secondary curves of
development, why does the 2nd curve develop? Correct
Answers Primary curves are retained from the original fetal
curvature, while secondary curvatures develop after birth. ...
Secondary curves are concave posteriorly, opposite in direction
to the original fetal curvature. The cervical curve of the neck
region develops as the infant begins to hold their head upright
when sitting.
Difference between sunscreen and sunblock. Correct Answers
The main difference between sunscreen and sunblock lies in
how they protect the skin against harmful UV rays. Sunblock is
so named because it literally blocks UV rays by forming a
physical shield, while a sunscreen absorbs them. ... Sunscreen,
on the other hand, is the chemical kind that absorbs the UVA
rays.
Difference in an open, comminuted, greenstick, and impacted
fracture Correct Answers Greenstick - A partial fracture in
which one side of the bone is broken and the other side bends;
similar to the way a green twig breaks on one side while the
other side stays whole, but bends; occurs only in children, whose
bones are not fully ossified and contain more organic material
than inorganic material.
Impacted - One end of the fractured bone is forcefully driven
into the interior of the other.
