BIOL 2401 Tarrant County College -BIOL 2401 Lecture Exam
#2 Questions | 2026/2027 | | Answers Correct | With Complete
Solutions
How many layer of keratinocytes does thick skin have? Correct
Answers 5 layers
How many layers of keratinocytes does thin skin have? Correct
Answers 4 layers (doesn't include stratum lucidum)
How much water do humans lose per day through the process of
insensible perspiration? Correct Answers 500 ml or 2 pints
In an osteon, how are the osteocytes arranged? Correct Answers
The osteocytes are arranged in concentric layers around a central
canal (also know as the Haversian canal)
Name 2 effects that the release of calcitonin ensures. Correct
Answers Inhibits osteoclast activity
Inc rate of excretion of calcium in kidneys
Name 3 hormones that are released to stimulate bone growth at
puberty. Correct Answers Sex
Growth
Thyroid
Name an important function of the lesser, true pelvis Correct
Answers Birth canal
Name another term also used for the marrow cavity. Correct
Answers Medullar cavity
,Name six effects that the aging process has on the integumentary
system Correct Answers Epidermis thins
Dermal blood supply decreases
Glandular activity decreases, causing dryness
# of Langerhans cells decrease, causing a decrease in immunity
Melanocyte production decreases
Vitamin production decreases ( about 75% )
Name the anterior process of the scapula Correct Answers
Coracoid process
Name the area that each osteocyte occupies. Correct Answers
Lacunae
Name the associated bones. Correct Answers Auditory ossicles
(6)
Hyoid bone (1)
Name the attachment site for ligaments that support the hyoid
bone to the pharynx and tongue. Correct Answers Styloid
Process
Name the attachment site for muscles that extend or rotate the
head. Correct Answers Mastoid Process
Name the basic functional unit of mature compact bone. Also
referred to as Haversian system. Correct Answers Osteon
Name the bone also referred to as the ossa coxae Correct
Answers Hipbone
, Name the bone created by the fusion of the atlas (C1) and axis
(C2). Correct Answers Prominent dens
Name the bone shape that are flat, small, and shaped somewhat
like a sesame seed. These develop inside tendons. Examples of
these are found near the joints of the knees, hands, and feet.
Correct Answers Sesamoid bone
Name the bone shape that have roughly parallel surfaces.
Examples of these are the skull, sternum, ribs, and scapula.
Correct Answers Flat bone
Name the bone shape that is comprised of complex shapes,
notches, and ridged surfaces. Examples of these are vertebrae,
pelvis, and several skull bones. Correct Answers Irregular bone
Name the bone shape that is flat, small, and irregularly shaped.
These are also referred to as Wormian bones. Examples of these
are found between the flat bones of the skull. Correct Answers
Sutural bone
Name the bone shape that is long and slender. Ex) of these are
arm, forearm, thigh, leg, palms of hands, soles of feet, fingers,
and toes. Correct Answers Long bone
Name the bone shape that is small and boxy. Examples of these
are carpals and tarsals. Correct Answers Short bone
Name the bone that contains the olecranon Correct Answers
Ulna
#2 Questions | 2026/2027 | | Answers Correct | With Complete
Solutions
How many layer of keratinocytes does thick skin have? Correct
Answers 5 layers
How many layers of keratinocytes does thin skin have? Correct
Answers 4 layers (doesn't include stratum lucidum)
How much water do humans lose per day through the process of
insensible perspiration? Correct Answers 500 ml or 2 pints
In an osteon, how are the osteocytes arranged? Correct Answers
The osteocytes are arranged in concentric layers around a central
canal (also know as the Haversian canal)
Name 2 effects that the release of calcitonin ensures. Correct
Answers Inhibits osteoclast activity
Inc rate of excretion of calcium in kidneys
Name 3 hormones that are released to stimulate bone growth at
puberty. Correct Answers Sex
Growth
Thyroid
Name an important function of the lesser, true pelvis Correct
Answers Birth canal
Name another term also used for the marrow cavity. Correct
Answers Medullar cavity
,Name six effects that the aging process has on the integumentary
system Correct Answers Epidermis thins
Dermal blood supply decreases
Glandular activity decreases, causing dryness
# of Langerhans cells decrease, causing a decrease in immunity
Melanocyte production decreases
Vitamin production decreases ( about 75% )
Name the anterior process of the scapula Correct Answers
Coracoid process
Name the area that each osteocyte occupies. Correct Answers
Lacunae
Name the associated bones. Correct Answers Auditory ossicles
(6)
Hyoid bone (1)
Name the attachment site for ligaments that support the hyoid
bone to the pharynx and tongue. Correct Answers Styloid
Process
Name the attachment site for muscles that extend or rotate the
head. Correct Answers Mastoid Process
Name the basic functional unit of mature compact bone. Also
referred to as Haversian system. Correct Answers Osteon
Name the bone also referred to as the ossa coxae Correct
Answers Hipbone
, Name the bone created by the fusion of the atlas (C1) and axis
(C2). Correct Answers Prominent dens
Name the bone shape that are flat, small, and shaped somewhat
like a sesame seed. These develop inside tendons. Examples of
these are found near the joints of the knees, hands, and feet.
Correct Answers Sesamoid bone
Name the bone shape that have roughly parallel surfaces.
Examples of these are the skull, sternum, ribs, and scapula.
Correct Answers Flat bone
Name the bone shape that is comprised of complex shapes,
notches, and ridged surfaces. Examples of these are vertebrae,
pelvis, and several skull bones. Correct Answers Irregular bone
Name the bone shape that is flat, small, and irregularly shaped.
These are also referred to as Wormian bones. Examples of these
are found between the flat bones of the skull. Correct Answers
Sutural bone
Name the bone shape that is long and slender. Ex) of these are
arm, forearm, thigh, leg, palms of hands, soles of feet, fingers,
and toes. Correct Answers Long bone
Name the bone shape that is small and boxy. Examples of these
are carpals and tarsals. Correct Answers Short bone
Name the bone that contains the olecranon Correct Answers
Ulna
