Unit 2 Flashcards
Which of the following is not a function of the skeleton?
A. Creation of red blood cells
B. Structure
C. Protection
D. Creation of calcium
D
What type of information can we NOT learn from comparing a fossilized skeleton with modern species?
A. Locomotion
B. Diet
C. Morphology
D. Temporality
D
True or False?
Humans have 3 premolars.
False
Which plane divides the body horizontally?
Transverse plane
What type of vertebrae are located most superiorly?
Cervical
True or False?
The coronal plane divides the body into right and left halves.
False
True or False?
In general, the articulations of the axial skeleton are more flexible than those of the appendicular skeleton.
False
Using anatomical terminology, the carpals are ___ to the bones of the shoulder girdle.
A. Proximal
B. Medial
C. Superior
D. Distal
D
Which of the following bone(s) is part of the axial skeleton?
A. Humerus
B. Vertebral column
C. Femur
D. Patella
B
Which bone is not part of the pelvic girdle?
A. Os coxa
B. Sacrum
C. Coccyx
D. Femur
D
___ is the scientific study of bones.
Osteology
Name and describe the four types of bones.
- Long Bone: Longer than wide
- Short Bone: About same length and width
- Flat Bone: Broad and thin
- Irregular Bone: Anything else
The ___ are the ends of the long bone that are filled with trabecular bone and covered with cortical bone.
Epiphysis
The ___ is the shaft of the long bone which is mainly a wall of cortical bone.
Diaphysis
The ___ is the outer membrane of the long bone.
Periosteum
The ___ is the inner membrane of the long bone.
Endosteum
What are short, flat, and irregular bones made up of?
Trabecular bone covered with a layer of compact bone.
Name the 6 main functions of bone.
- Structural framework for body
- Protects internal organs
- Levers moved by muscles
- Stores minerals
- Stores fat
- Makes components of blood
Name the 4 main features of yellow bone marrow
- In marrow cavity of long bones
- Can be converted to red marrow in case of massive blood loss
- Mainly made up of fat cells
- Half of all bone marrow is yellow at adulthood
Name the 3 main features of red bone marrow.
- Located in flat bones and epiphyses of long bones
- Red blood cells, white blood cells, platelets made there
- All bone marrow is red at birth
The ___ plane cuts the body into left and right.
Sagittal
The ___ plane cuts the body into front and back.
Coronal
The ___ plane cuts the body horizontally in a cross-section.
Transverse
___ means closer to the head.
Superior
___ means further from the head.
Inferior
___ means towards the front of the body.
Anterior
___ means towards the back of the body.
Posterior
___ means toward the midline of the body.
Medial
___ means away from the midline of the body.
Lateral
___ means closer to the trunk of the body.
Proximal
___ means further from the trunk of the body.
Distal
The ___ skeleton includes the shoulder girdle, pelvic girdle, and limbs.
Appendicular
The ___ skeleton consists of the midline of the body (skull, spinal cord, ribs, etc.)
Axial
The ___ is the hole located on the occipital bone that allows the spinal cord to pass into the skull.
Foramen Magnum
The ___ of the tooth is the mineralized chewing surface that does not remodel.
Enamel
The ___ of the tooth is the softer shock absorber.
Dentin
The ___ of the tooth is soft tissue that contains nerves and blood vessels.
Pulp
The ___ of the tooth is a calcified bonelike substance that anchors the tooth to the jaw.
Cementum
The ___ is the only human bone that does not touch another bone.
Hyoid
Name the 2 bones that make up the shoulder girdle.
Scapula and Clavicle
All primates belong to which biological class?
Mammalia
True or False?
Homologies are features that have developed based on convergent evolution.
False
Which of the following is lacking in strepsirhines but present in haplorhines?
A. Tail
B. Grooming claw
C. Postorbital bar
D. Postorbital plate
D
What is the typical dental formula of platyrrhines?
2-1-3-3
What is the typical dental formula of catarrhines?
2-1-2-3
Which of the following is NOT a hominoid?
A. Human
B. Orangutan
C. Spider monkey
D. Gibbon
C
What type of molar pattern do the hominoids express?
Y-5
True or False?
Platyrrhines typically posess three premolars in each quadrant of their mouth, while catarrhines have two premolars in each quadrant of their mouth.
True
What type of molar pattern do cercopithecoids express?
Bilophodont
Some platyrrhines posess which trait that is lacking in other primates?
Prehensile tail
Adaptation helps maintain ___, which means keeping the internal environment of an organism within an acceptable healthy range.
Homeostasis
___ adaptation refers to a change in allele frequencies and occurs at the population level through natural selection.
Genetic
___ adaptation refers to changes during growth and development and occurs at the individual level based on environment.
Developmental
___ adaptation refers to “Acclimatization” and occurs at any point in the individual’s life.
Physiological
___ adaptation refers to the use of material culture to make living in an environment possible.
Cultural/Behavioral
Which levels of adaptation are reversible and which are not?
- Reversible: Physiological
- Irreversible: Genetic, Developmental
According to Bergmann’s Rule, a person with a large stocky body would be adapted to ___ climates while a person with a small skinny body would be adapted to ___ climates.
cold; warm
According to Allen’s Rule a person with short, thick limbs would be adapted to ___ climates while a person with long, thin limbs would be adapted to ___ climates.
cold; warm
___ is when blood vessels near the body surface expand to lose heat.
Vasodilation
___ is when blood vessels near the body surface constrict to produce heat in cold skin.
Vasoconstriction
At very high altitudes, there is ___ air pressure and ___ UV radiation.
lower; high
Name the 3 consequences of high UV radiation.
- Skin aging
- Tanning
- DNA Mutations
A(n) ___ is a group of individuals that share a common ancestor.
subspecies
Name the 2 problems with the subspecies argument for race.
- The physical features of “race” form a cline.
- Not every human population fits into neat “race” caregories.
___ is a pigment in the outer layers of the skin.
Melanin
Skin colors is produced by different combinations of…
- Brown-black melanin pigment
- Yellow-red melanin pigment
More melanin production in melanocytes = ___ skin.
darker
Vitamin D is a steroid hormones that regulates… (2 answers)
- Calcium absorption
- Mineralization of the skeleton
The body needs ___ to convert 7-dehydrocholesterol in the skin into Vitamin D.
UV radiation
___ is a water-soluble B9 vitamin essential for synthesis and repair of DNA.
Folate
How does Eugenices relate to race?
Laws and genocides in the past provide types of artificial selection to make certain races more or less common.
What type of joint is between the wrist and the metacarpal of the thumb?
Saddle joint
Which type of joint gives the widest range of motion?
Ball and socket
Which type of joint gives the lowest range of motion?
Hinge joint
How many deciduous teeth do humans grow?
20
How many permanent teeth do humans grow?
32
What is the dental formula for humans and apes?
2-1-2-3
Name 3 reasons to study primates.
- Cross-species perspective
- Helps us understand and model how humans evolved
- Insight into human behavior, morphology, culture.
Name the different arboreal adaptations that primates acquired.
- Generalized body structure
- Enhanced sense of touch
- Enhanced sense of vision
- Post-orbital bar or plate behind the eye orbits
- Reduced sense of smell
Name 4 traits of Strepsirhines.
- Post-orbital bar
- Large olfactory bulb
- Claws rather than nails
- Tooth comb
Name the 2 main differences between platyrrhines and catarrhines.
- Platyrrhines have broad nose and 2-1-3-3 dental formula
- Catarrhines have hook nose and 2-1-2-3 dental formula