Exam 3 Questions

three factors for direction of venous blood

- resp pump - skeletal muscle pump - fold of tunica intima AKA valves

which takes longer to depolarize?

AV node and need to let Ca ions in

What is the thin filament composed of?

actin

the special senses of olfaction involves

bipolar neurons and phasic receptors

the rectus femoris

flexes hip, extends knee

ventricular systole happens

in a wave that begins at the apex and spreads towards the base

gustation is in the

insula

adter a skeletal muscle action potential is generated, it travels along the --- until it reaches the sarcoplasmic reticulum, whose role in muscle contraction is to --- calcium ions into the ----

transverse tubules release sarcoplams

the largerst muscle of the upper back is the

trapezius

arteries experience more pressure

true

how many openings does the diaphragm have?

3

if SA node stops working,

AV nodes kick in

which of the following is not part of the conduction system of heart>

AV valve

during atrial systole

AV valves are open

where are pacemaker cells found

SA node

which muscle inserts on the tibia?

Semitendinosus

caval foramen

Transmits INFERIOR vena cava

lateral rectus

abducts eye

myofilaments are

actin and myosin

sarcormeres made up of

actin and myosin

medial rectus

adduction of eye

heart remains bleeding after death until

all nutrients go away

obliques always point medially and

allow it to rotate

an increase in muscle mass can be directly related to

an increase of myofibirals within the skeletal muscle cells and development of CT

interaction between two blood vessels

anastomosis

highest blood pressure is in the

aorta

which structure prevents backflow into the left ventricle?

aortic valve

myogenic control of visceral muscle is done with

assitance of baroreceptors

ventricular contraction starts

at apex of heart

atrial contraction starts

at base of heart

valves do not let blood go

back into atrium

receptors used to provde blood pressure info

baroreceptors

which structure prevents backflow into the left atrium?

bicuspid valve

optic disk is known as

blind spot

muscle for blowing and sucking

buccinator

the AV valves are supported by

chordae tendineae so that do not blow back up into the atria during ventricular contraction

the orbicularis oris muscle is an example of a

circular muscle

normal heart sounds are caused by

closure of the heart valves

Receptors for hearing are located in the

cochlea

macula only has

cones

Three types of capillaries

continuous- simple squamous epithelium fenestrated- choroid plexus and kidney sinusoids- RB marrow and spleen

thin wall with barely any smooth muscle receives from cardiac veins and dumps at right atrium

coronary synous

muscle that lowers eyebrows

corrugator superalli

conscious perception of vision probably reflects activity in the

cortex of occipital lobe

baroreceptors are found deep in the internal organs and sensitive to

deep pressure and stretching of dermis

which abducts the arm?

deltoid

most important skeletal muscle

diaphragm

elevates hyoid bone during swalllowing and depresses mandible

digastric

depresses mandible

digastric and mylohyoid

the ability of muscle to rebound toward its original length after contraction

elasticity

the prime mover of spinal extension is the

erector spinae

pressure, pain and temperature receptors in the skin are

exteroreceptors

inferior oblique

extorsion, elevation, abduction

a muscle that flexes the knee would originate on the

femur/ coxal bone

scalenes contracting together would

flex the neck

which action is performed by most of the muscles located in the anterior compartment of the forearm?

flexion

take a bow

flexion of torso, which happens with rectus abdominis and psoas major

adduction at the wrist involves contraction of the

flexor carpi ulnaris and extensor carpi ulnaris

protracts tongue

genioglossus

longest vein

great saphenous

synergists are

helper muscles

superior oblque

intorsion

the biceps femoris is --- to semitendonosus

lateral

gluteus maximus

laterally rotates and extends the thigh at the hip

CN 3, 4, 6

lets your eyes do tricks

muscle that raises upper lip

levator labii superioris

external iliac arteries goes to

lower limbs

elevates mandible

masseter and temporalis

Baroreceptors are

mechanoreceptors

which type of general sense receptors detects pressure changes in walls of blood vessels and in parts of digestive, reproductive and urinaty tract?

mechanoreceptors

the semimembranous is ---- to semitendonosus

medial

what is represented asa single muscle cell?

muscle fiber

a muscle fascicle is composed of several

muscle fibers

sequence of sarcomeres

myofibiril

gives a darker color

myoglobin

Does the blind spot have rods or cones?

no

Potentially damaging stimuli that result in pain are selectively detected by ________.

nociceptors

which of these types of receptors responds to pain stimuli?

nociceptors

muscle contraction is involved in heat production to maintain

normal body temperature

muscle that raises eyebrows

occipitofrontalis

The receptors of olfaction are found in this structure.

olfactiry epithelium

which of the following is correct olfactory pathway?

olfactory epithelium, olfactory nerve, olfactory tract and cerebral cortex

depresses hyoid to form elevated position

omohyoid

I bands have

only thin filaments

aortic hiatus

opening in diaphragm for the aorta to pass from the heart to the abdomen

opening in the diaphragm for the esophagus

opening in the diaphragm for the esophagus

Muscle that puckers lips

orbicularis oris

what can help with inducing contractions?

oxytocin

spicy food is detected by

pain receptors

small muscles masses attached to the chordae tendinae are the

papillary muscles

fascicles are straight

parallel

a lady between two major muscles

pectoralis major tres major latissimus dorsi

which of the following performs a punch in the shoulder joint?

pectoralis minor

anterior muscles of chest

pectoralis minor and serratus anterior

internal iliac artery supplies to organs between

pelvic girdle

has central tendon and fascicles attach at an angle

pennate

receptors with touch

phasic receptors

smell receptors

phasic receptos

the rectus abdominis is ---- to external oblique

posterior

agonist are known as

prime mover muscles

the general senses of olfaction includes

pseudopolar and phasic receptors

which adducts the scapula?

rhomboid minor

the SVC receives blood from

right and left brachiocephalic vein and asygous

which muscles contracted will give lateral flexion of torso?

right external and internal obliques

the pulmonary trunk receives blood from

right ventricle

internal intercostals

run away from midline and depress ribs

while doing yoga, i feel sharp pain in my this. the muscle that lets me cross my legs is

sartorius

occurs when a receptor becomes so accustomed to the stimulation that it stops gathering impulses

sensory adaptation

veins have thinner

smooth muscle

you are showding a physician and see a pt with damage to one of her blood vessels. blood vessels are lined with what muscle?

smooth muscle

muscle can grow but surrounding CT doesnt because

steroids

which of the following is a main characteristic of a skeletal muscle fiber?

striated appearance

retracts the tongue (tongue in mouth)

styloglossus

elevate hyoid when swallowing

stylohyoid

external intercostal located

superficially and elevate ribs

right atrium receives blood from

superior vena cava, inferior vena cava, coronary sinus

biceps brachii are well known for

supination

muscles that sit on scapula

supraspinatus, infraspinatus, teres minor, subscapularis

the epimysium layer of dense irregular CT that

surrounds the entire skeletal muscle, separating the muscle from surrounding tissues and organs

olfactory is in the

temporal lobe

plantaris is

the longest tendon in our body

splenius capitis extends

the neck

H zone has

thick filaments only (myosin)

dorsiflexion of the foot involves

tibialis anterior, extensor digitorum longus, extensor hallucis longus

posterior muscles of chest

trapezius, levator scapula, rhomboid

extension at arm, shoulder, elbow

triceps brachii

which structure is known as AV valve with three flaps?

tricuspid valve

muscles can have insertion and origin on same bone

true

which structure separates the external auditory canal from the middle ear?

tympanic membrane

valves not closing cause

varicose veins

olfaction pathway is

vcj

the tibialis anterior is -- to gastronemicus

ventral

if there is an issue with IVC,

we go into A-systole

does the uterus contract when you breast feed?

yes

muscle that raises corner of mouth

zygomaticus