The white ramus and the gray ramus collectively are called the
A) spinal nerve.
B) rami communicantes.
C) meninges.
D) ganglia.
E) ascending tracts.
The orbicularis oculi origin has its origin on the
A) angle of the mouth.
B) skin around the eyelids.
C) lateral nasal cartilages.
D) upper eyelid.
E) sides of the tongue.
Within the oral cavity, both mechanical and chemical ________ begin.
A) mastication
B) deglutition
C) digestion
D) ingestion
E) secretions
The layer of stem cells that constantly divide to renew the epidermis is the
A) stratum corneum.
B) stratum basale.
C) papillary layer.
D) basal lamina.
E) stratum granulosum.
A transport mechanism that can move a substance against a concentration gradient by
using cellular energy is
A) simple diffusion.
B) facilitated diffusion.
C) osmosis.
D) bulk transport.
E) active transport.
The purpose of the two small muscles, the tensor tympani and the stapedius, in the ear
is to
A) move the ossicles.
B) reduce damage to the earbones.
C) contract quickly when there is a loud sound.
D) protect the tympanic membrane.
E) All of the answers are correct.
The portion of the pharynx that receives both air and food is the
A) nasopharynx.
B) oropharynx.
C) esophageal pharynx.
D) aeropharynx.
E) internal pharynx.
What is the full term for TMJ syndrome?
A) tympanomandibular joint
B) temporomaxillary joint
C) tympanomentalis joint
D) temporomandibular joint
E) tendermouth junction
The following is a list of the events that occur during a muscle contraction. What is the
correct sequence of these events?
1. Myosin cross-bridges bind to the actin.
2. The free myosin head splits ATP.
3. Calcium ion is released from the sarcoplasmic reticulum.
4. The myosin head pivots toward the center of the sarcomere.
5. Calcium ion binds to troponin.
6. The myosin head binds an ATP molecule and detaches from the actin.
A) 1, 3, 5, 4, 6, 2
B) 5, 1, 4, 6, 2, 3
C) 3, 5, 1, 2, 4, 6
D) 3, 5, 1, 4, 6, 2
E) 1, 4, 6, 2, 3, 5
If the pons was damaged, which of the following functions would be affected?
A) breathing
B) control of blood pressure
C) coordination
D) sleep patterns
E) judgment
The nerve crucial for breathing that originates within the cervical plexus is called the
________ nerve.
A) brachial
B) phrenic
C) intercostal
D) ganglion
E) sciatic
The appendicular skeleton includes the bones of the upper and lower extremities and
their supporting elements called
A) joints.
B) girdles.
C) sutures.
D) ball and socket.
E) rotator cuffs.
________ cells connect photoreceptors to ganglion cells.
A) Bipolar
B) Ganglion
C) Amacrine
D) Cone
E) Rod
Figure 21-1 Arteries
Identify the arteries labeled “9.”
A) axillary
B) brachiocephalic
C) common carotid
D) aorta
E) brachial
The “m” in mRNA stands for
A) messenger.
B) modifier.
C) metabolic.
D) molecular.
E) matching.
Identify the correct statement regarding the process of denaturation.
A) It is affected by low temperatures.
B) It is unaffected by changes in pH.
C) It is the loss of protein structure.
D) It is an increase in enzyme activity.
E) It results in decreased substrate availability.
________ monitor the position of skeletal muscles and joints
A) Proprioceptors
B) Internoceptors
C) Photoreceptors
D) Exteroceptors
E) Pressoreceptors
The ________ duct is formed by the union of the cystic duct and the common hepatic
duct.
A) pancreatic
B) hepatopancreatic
C) gastric
D) common bile
E) duodenal
The girdles of the appendicular skeleton support the bones of the
A) shoulder.
B) hip.
C) thoracic cage.
D) limbs.
E) vertebrae.