Appendicular Skeleton Flashcards
anterior view
at or near the front of the body
lateral view
from the side
posterior view
at or near the back of the body
acromion
the highest point of the shoulder
coracoid process
hook shaped bone. projects anterolaterally (front and the side) from the. superior aspect of the scapular neck.
spine
prominent ridge of bone from the posterior surface of the scapula
glenoid cavity
a shallow, vertically elongate concavity that receives the head of the humerus
which of the following is primarily responsible for stabilizing, positioning, and bracing the pectoral girdles
A) tendons
B) ligaments
C) the joint shape
D) muscles
E) the shape of the bones within the joint
D
sacrum
shield shaped, located at the base of lumbar vertebrae and is connected to the pelvis
coccyx
lies beneath the sacrum
ilium
upper portion of the hip bone and pelvis
pubis
at the front of the hip bone closest to the genitals
ischium
paired bone of the pelvis, forms the lower and back part of the hip bone
hip bone
ball and joint socket, located in the pelvis
in the anatomical position, the ulna lies
A) medial to the radius
B) lateral to the radius
C) inferior to the radius
D) superior to the radius
A
the point of the elbow is actually the _____ of the ulna
A) styloid
B) olecranon
C) coronoid process
D) trochlear notch
B
the bones of the hand articulate distally with the
A) carpal bones
B) ulna and radius
C) metacarpals
D) phalanges
D
The epiphysis of the femur articulates with the pelvis at the
A) pubic symphysis
B) acetabulum
C) sciatic notch
D) obturator foramen
B
what is the name of the flexible sheet that interconnects the radius and ulna (and the tibia and fibula)
interosseous membrane
name the bones that make up each hip bone
ilium, ischium, and pubis
which seven bones make up the ankle
talus, calcaneus, cuboid, navicular, three cuneiform bones
the presence of tubercles on bones indicates the positions of
A) tendons and ligaments
B) muscle attachments
C) ridges and flanges
D) a and b
D
at the glenoid cavity, the scapula articulates with the proximal end of the
A) humerus
B) radius
C) ulna
D) femur
A
all of the following are structural characteristics of the female pelvic girdle compared to the male pelvic girdle with either one or two exceptions. identify the exceptions
A) the female pelvis is adapted for childbearing
B) the female pelvic girdle is lighter than the male pelvic girdle
C) relaxin produced by the male pelvic girdle loosens the pubic symphysis and sacro-iliac joints
D) the shape of the female pelvic girdle is the same as the male
E) both c and d
E
the large foramen between the pubic ramus and ischial ramus is the
A) foramen magnum
B) suborbital foramen
C) acetabulum
D) obturator foramen
D
which of the following skeletal characteristics is an adaptation for childbearing
A) inferior angle of 100 degrees or more between the pubic bones
B) a relatively broad, low pelvis
C) less curvature of the sacrum and coccyx
D) all of these are correct
D
the fibula
A) forms an important part of the knee joint
B) articulates with the femur
C) helps bear the weight of the body
D) provides lateral stability to the ankle
E) a and b
D
the tarsal bone that transfers and distributes weight to the heel or toes is the
A) cuneiform
B) calcaneus
C) talus
D) navicular
C
what is the difference in skeletal structure between the pelvic girdle and the pelvis
the pelvic girdle consists of two hip bones (coxal bones or pelvic bones). the pelvis consists of two hip bones of the appendicular skeleton and the sacrum and coccyx of the axial skeleton
why would a self defense instructor advise a student to strike an attacker’s clavicle
clavicles are small and fragile, so they are easy to break. the attacker would no longer have efficient use of his arms
jack injures himself playing hockey, and the physician who examines him informs him he has dislocated his pollex. what part of jacks body did he injure?
A) his arm
B) his leg
C) his hip
D) his thumb
E) his shoulder
D
the pelvis
A) protects the upper abdominal organs
B) contains bones from both the axial and appendicular skeleton
C) is composed of the coxal bones, scarum, and coccyx
D) does all of these
E) only a and c
E
why is the tibia, but not the fibula, involved in the transfer of weight to the ankle and foot
it doesn’t help with transferring weight to the ankle and foot because its excluded from the knee joint
in determining the age of a skeleton, all of the following pieces of information would be helpful except
A) the number of cranial sutures
B) the size and roughness of the markings of the bones
C) the presence or absence of fontanelles
D) the presence or absence of epiphyseal cartilages
E) the types of minerals deposited in the bones
E
why would a person suffering from osteoporosis be more likely to suffer a hip fracture than a broken shoulder
hip fractures involve the femur, hip joints must help support the body’s weight. any weakening of the femoral bones may result in their breaking under the weight of the body
while fireman fred is fighting a fire in a building, part of the ceiling collapses and a beam strikes him on his left shoulder. he is rescued but has a great deal of pain in his shoulder. he cannot move his arm properly, especially on the anterior direction. his clavicle is not broken and his humerus is intact. what is the probable nature of fred’s injury
dislocated his shoulder, common due to the weakness of the shoulder (glenohumeral) joint
investigators find the pelvis of a human and are able to identify the sex, age, and some physical characteristics of the person. how is this possible with only the pelvis
persons age can be estimated due to the size and degree of mineralization. the persons’ appearance can be seen due to the size and shape of the muscles.
