Anatomy Practice Test 2 - things about muscles

Muscles of the trunk and tail are segmental and metameric, what 2 statements are paired correctly

• metameric, used in locomotion

• metametic, from their embryonic origin

• segmenta, for locomotion

• segmental, from embryonic locomotion

what muscle is common in all animals' pharyngeal arches

• branchial adductors

• intrinsic larynx muscles

• dilator laryngis

• cucullaris

Answer explanation

branchial adductor is sharks only,

dilator laryngis is amphibian and reptile only

larynx muscles is mammal only

which hyoid arch muscle is in amphibians and reptiles

• depressor mandibuli

• dorsal hyoid constrictor

• interhyoideus

• ventral hyoid constrictor

Answer explanation

depressor mandibuli is in mammals, dorsal hyoid constrictor and interhyoideus is in sharks

what is not present in mandibular arch of tetrapods

• preorbitals

• adductor mandibulae

• intermandibularis

• spiracularis

• levator palatoquadrati

Answer explanation

the rest are in tetrapods and sharks

what muscles are associated with pharyngeal arches

• mandibular arch

• hyoid arch

• both

gracilis, soleus, digit flexors and leg flexors are _____

• ventral pelvic limb muscles

• dorsal pelvic limb muscles

• dorsal trunk muscles

• ventral trunk muscles

what does not belong

• psoas

• illiacus

• pectineus

• obturator

• sartorius

Answer explanation

obturator is ventral pelvic muscles the rest are dorsal pelvic muscles

what does not describe bird musculature

• reptilian

• reduced intrinsic muscles

• weigh borne by extrinsic forelimb and intrinsic hindlimb

• none of the above

what is common about teres major and minor, supinator and subscapularis

• they are dorsal intrinsic muscles

• they are ventral intrinsic muscles

• they are dorsal extrinsic muscles

• they are ventral intrinsic muscles

what is not a ventral intrinsic muscle

• supraspinatus

• brachialis

• biceps branchii

• pronators

• manus extensors

Answer explanation

manus extensor is dorsal intrinisc, the flexor is intrinisc though