UNT lab exam 3

ischial tuberosity

Name one origin of the supraspinatus muscle.

cardiac

Identify the type of muscle tissue shown?

location, action

List two of the seven criteria listed in your lab manual that are used to name muscles?

acetylcholine

What neurotransmitter do motor neurons use to stimulate muscle cells?

A-band

Identify the indicated region of the sarcomere.

thin filaments

Identify the indicated region of the sarcomere.

t-tubule

Identify the indicated structure.

epimysium

Identify the indicated layer of connective tissue.

treppe

If we stimulate a muscle, and then stimulate it again immediately after it has been allowed to relax, we observe that the second contraction of the muscle is slightly greater than the first. What do we call this phenomenon?

latent phase

What do we call the period of time between the application of a stimulus to a muscle and the first observable response or movement of the muscle?

Motor unit

A neuron and all of the muscle cells that it stimulates are together called a _________________?

tension of skin of neck

Name one action of the platysma muscle.

extension of leg

Name one action of the rectus femoris muscle.

rotation of head

Name one action of the sternocleidomastoid muscle.

extension of head

Name one action of the trapezius muscle.

intertubercular sulcus of humerus

Name one insertion of the pectoralis major muscle.

xiphoid process

Name one insertion of the rectus abdominis muscle.

orbicularis oris

Name one insertion of the buccinator muscle.

base of metacarpals II and III

Name one insertion of the flexor carpi radialis muscle.

humerus

Name one origin of the triceps brachii muscle.

ramus and body of pubis

Name one origin of the gracilis muscle.

zygomatic bone

Name one origin of the zygomaticus minor muscle.

acetabulum

Name one origin of the rectus femoris muscle.

external oblique abdominal

Identify the indicated muscle.

platysma

Identify the indicated muscle.

sternocleidomastoid

Identify the indicated muscle.

zygomaticus minor

Identify the indicated muscle.

orbicularis occuli

Identify the indicated muscle.

sternocleidomastoid

Identify the indicated muscle.

gastric

Identify the indicated muscle.

external intercostals

Identify the indicated muscle.

diaphragm

Identify the indicated muscle.

serratus anterior

Identify the indicated muscle.

teres major

Identify the indicated muscle.

rhomboid major

Identify the indicated muscle.

coracobrachialis

Identify the indicated muscle.

flexor carpi ulnaris

Identify the indicated muscle.

extensor digitorum

Identify the indicated muscle.

pronator teres

Identify the indicated muscle.

psoas major

Identify the indicated muscle.

adductor longus

Identify the indicated muscle.

fibularis brevis

Identify the indicated muscle.

biceps femoris

Identify the indicated muscle.

smooth

Identify the type of muscle tissue shown?

sarcomeres

What are the individual contractile units of a muscle cell called?

H-zone

Identify the indicated region of the sarcomere.

I-band

Identify the indicated region of the sarcomere.

sarcoplasmic reticulum

Identify the indicated structure.

isotonic

If a muscle contracts against a load that it is able to lift, what type of contraction is the muscle demonstrating?

twitch

A single contraction of a muscle is called a _____________?

fatigue

If we require a muscle to contract until it starts to run out of ATP, what do we call the state of the muscle at that point?

agonists

What do we call muscles that are primarily responsible for producing a specific movement?

flexion of arm

Name one action of the pectoralis major muscle.

abduction of arm

Name one action of the deltoid muscle.

elevation of mandible

Name one action of the masseter muscle.

adduction of thigh

Name one action of the gracilis muscle.

patella

Name one insertion of the rectus femoris muscle.

deltoid tuberosity of humerus

Name one insertion of the deltoid muscle.

medial aspect of upper tibial shaft

Name one insertion of the semitendinosus muscle.

medial and lateral condyles of femur

Name one origin of the gastrocnemius muscle.

clavicle

Name one origin of the pectoralis major muscle.

clavicle

Name one origin of the sternocleidomastoid muscle.

infraspinous process of scapula

Name one origin of the infraspinatus muscle.

rectus abdominis

Identify the indicated muscle.

masseter

Identify the indicated muscle.

temporalis

Identify the indicated muscle.

occipitalis

Identify the indicated muscle.

buccinator

Identify the indicated muscle.

internal intercostals

Identify the indicated muscle.

infraspinatus

Identify the indicated muscle.

supraspinatus

Identify the indicated muscle.

extensor carpi ulnaris

Identify the indicated muscle.

palmaris longus

Identify the indicated muscle.

gracilis

Identify the indicated muscle.

tensor fascia latae

Identify the indicated muscle.

soleus

Identify the indicated muscle.

semimembranosus

Identify the indicated muscle.

terminal cistern

Identify the indicated structure.

perimysium

Identify the indicated layer of connective tissue.

tetanus

If we increase the frequence of stimulation of a muscle untill we acheive a steady sustained contraction, we will have caused what phenomenon?

motor unit

A neuron and all of the muscle cells that it stimulates are together called a _________________?

antagonists

What do we call muscles that oppose or reverse a particular movement?

flexion of leg

Name one action of the semitendinosus muscle.

closes eyelids

Name one action of the orbicularis oculi muscle.

plantar flexion of foot

Name one action of the gastrocnemius muscle.

radial tuberosity

Name one insertion of the biceps brachii muscle.

mastoid process of temporal

Name one insertion of the sternocleidomastoid muscle.

skin and muscle at corner of mouth

Name one insertion of the zygomaticus minor muscle.

skin

Name one insertion of the platysma muscle.

anterior humerus

Name one origin of the brachialis muscle.

sternothyroid

Identify the indicated muscle.

sternohyoid

Identify the indicated muscle.

pectoralis major

Identify the indicated muscle.

biceps brachii

Identify the indicated muscle.

levator scapulae

Identify the indicated muscle.

extensor carpi radialis longus

Identify the indicated muscle.

pectineus

Identify the indicated muscle.

gluteus medius

Identify the indicated muscle.

fascicle

Identify the indicated structure.

isometric

If a muscle contracts against a load that is too heavy for the muscle to lift, what type of contraction is the muscle demonstrating?