Question: 1) The biggest drawback to an external skeleton is that it a. cannot grow with the animal. b. is …

1) The biggest drawback to an external skeleton is that it
a. cannot grow with the animal.
b. is not flexible enough to allow movement.
c. is inefficient at connecting to muscles.
d. cannot provide the means to push great distances.
e. interferes with homeostasis.
2) The simplest type of skeleton, the _____ skeleton, makes use of
fluid-filled tissues.
a. hydrostatic
b. external
c. internal
d. calcified
e. mantle
3)The _____ skeleton is comprised of the skull, vertebral column,
ribs, and sternum.
a. axial
b. peripheral
c. pectoral
d. appendicular
e. central
4) The _____ vertebrae are the smallest and allow the widest range
of motion in humans.
a. thoracic
b. lumbar
c. cervical
d. pelvic
e. axial
5) Cartilaginous cells are also called
a. collagenocytes.
b. chondrocytes.
c. chondroblasts.
d. osteoblasts.
e. osteocytes.
6) The human skeleton is a major storage compartment for _____
which helps to harden the bones.
a. calcium
b. fluoride
c. carbon
d. potassium
e. sodium
7)The _____ of the human skeleton helps to support the arms.
a. pectoral girdle
b. pelvic girdle
c. cervical vertebrae
d. thoracic vertebrae
e. sacrum
8)The major protein in bone is _____, which provides strength, but
not hardness.
a. collagen
b. actin
c. myosin
d. spectrin
e. spongin
9)During embryonic development, most bones are formed from a
a. membranous model.
b. fibrous connective tissue model.
c. calcified model.
d. cartilage model.
e. muscle tissue model.
10) In skeletal tissue, osteocytes are found in concentric rings
within chambers called
a. osteons.
b. osteonic canals.
c. canaliculi.
d. marrow cavities.
e. lacunae.
11) The interior of spongy bone contains _____ which is where red
blood cells and platelets are made.
a. red marrow
b. spongin
c. osteonic canals
d. otoliths
e. lacunae
12) _____ are the predominant bone cells.
a. Otoliths
b. Osteocytes
c. Ossicles
d. Lacuna
e. Chondrocytes
13) Striated, voluntary, multinucleated muscle fibers comprise
_____ muscle tissue.
a. cardiac
b. skeletal
c. thoracic
d. smooth
e. transverse
14)The functional unit of a muscle cell is the
a. sarcomere.
b. fascicle.
c. transverse tubules.
d. sarcoplasm.
e. motor unit.
15)Muscle fibers are made up of organelles and hundreds of
thousands of cylindrical subunits called
a. sarcomeres.
b. fascicles.
c. myofibrils.
d. myofilaments.
e. transverse tubules.
17)Small, membrane-lined packets called __ contain fluid and help
cushion the joints.
18)The __ is where a muscle attaches to the bone that it
moves.
19)Exercise-induced increase in the size of a muscle, called __, is
due to increases in cell size, not number.
20)The release of __ from the sarcoplasmic reticulum causes a
muscle contraction.
21) __ muscle is found in the intestines and is not under conscious
control.
22)A band of fibrous connective tissue called a __ connects muscle
to bone.
23)The 5-fused pelvic vertebrae make up the __, which lies between
the two hipbones.