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Amphibians Review #1. Membrane that blinks to keep amphibian eyes moist on land and closes to cover the eye when swimming under water. Nictitating membrane. Deoxygenated blood returning to the heart from the body enters the _________________ from the sinus venosus. Right atrium.

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slide2
Membrane that blinks to keep amphibian eyes moist on land and closes to cover the eye when swimming under water.

Nictitating membrane

Deoxygenated blood returning to the heart from the body enters the _________________ from the

sinus venosus.

Right atrium

slide3
These are located in the frog’s skin and help to keep it moist

Mucous glands

The multi-purpose cavity that receives waste from the digestive system, urinary bladder, and sperm and eggs from the reproductive system before exiting the body.

cloaca

slide4

Animalia

Frogs belong to the

Kingdom :

Phylum:

Sub Phylum:

Class:

Order:

Chordata

Vertebrata

Amphibia

Anura

slide5

Amphibians

Cold blooded organisms with moist, thin skin, webbed feet, a 3-chambered heart, that undergo metamorphosis from a larval to adult stage are called ____________________

Oxygenated blood returning to the heart from the lungs enters the _________________

Left atrium

slide6
Respiratory organ found in the larval stage of amphibians

gills

Name the parts of the brain starting at the spinal cord and moving toward the nose.

Medulla oblongata

Cerebellum

Optic lobes

Cerebrum

Olfactory lobes

slide7

mesentery

Thin fan-like membrane that holds the digestive organs in place.

The upper portion of the small intestine closest to the stomach is called the ___________________

duodenum

slide8

skin

Cutaneous respiration involves exchanging gases through the ______________

Blood vessels that carry blood away from the heart are called ____________________.

arteries

slide9

Medulla oblongata

cerebrum

Match the brain part to its function:

Controls involuntary body organs ___________________

Higher thinking & learning _______________

Processes info about vision

& hearing _______________

balance & motor coordination ____________

Processes info about smell _______________

Optic lobes (tectum)

cerebellum

Olfactory lobes

slide10

lungs

Pulmonary respiration uses this body organ.

The eardrum in a frog is called the __________________

Tympanic membrane

slide11

Reproductive

Name the body system for each organ:

oviducts

kidneys

olfactory lobes

lungs

Skin

Excretory

Nervous

Respiratory

Integumentary/Respiratory

slide12

3

Number of chambers in an amphibian heart

Tail-less amphibians like frogs and toads belong to the order _______________

Anura

“An = without uro = tail”

slide13

Thyroxin

Hormone made by the thyroid gland that controls metamorphosis

Digestive organ that produces bile for the small intestine.

liver

slide14
The digestive organ where nutrients are absorbed from digested food.

Small intestine

Frogs use positive pressure breathing. They move air in and out by raising and lowering the _______________________

Roof of their mouth

slide15

cerebrum

Area of the brain for higher thinking that is responsible for learning, memory, and reasoning

Small bone that extends between the tympanic membrane and the inner ear

Columella

slide16

liver

Match the part with its function:

Make bile __________________

store bile __________________

place where bile is used __________________

respiratory organ in tadpoles _______________

makes trypsin _________

Gall bladder

Small intestine (duodenum)

gills

pancreas

slide17

Conus arteriosus

A valve in the _________________ prevents mixing of the high oxygenand low oxygen carrying blood

Blood leaving the heart travels through the pulmonary ______________ to the lungs.

arteries

slide18

liver

Match the part with its function:

Processes nitrogen waste for the kidneys __________________

removes nitrogen waste from blood and makes urine __________________

removes worn out blood cells __________________

respiratory organs in adult frogs _______________

excretory organ in adult frogs _____________

kidneys

spleen

Skin & lungs

kidneys

slide19

closed

Type of circulatory system in a frog

Closed Open

stomach

Acids in the _______________ helps to break down food.

slide20

kidneys

Match the part with its function:

Regulates ion/water concentrations in blood __________________

stores urine __________________

concentrates & collects digestive waste _____________

receives urine, feces, & sperm or eggs _____________

makes insulin and glucagon _________

urinary bladder

Large intestine

cloaca

pancreas

slide21

Follow the path of blood in the frog circulatory system.

Sinus

venosus

Bodyorgans

RIGHTAtrium

LEFTAtrium

Lungs

Conus

arteriosus

Ventricle

slide22

Lungs and skin

Name two respiratory organs in adult frogs

external

Fertilization in frogs is _______________

External internal

slide23

ears

Tell where each mouth opening leads to:

Eustachian tubes

internal nares

glottis

gullet

External nares

Respiratory (lungs)

Digestive (esophagus)

slide24

fat bodies

Food stored in the _______________ is used during hibernation and estivation.

The teeth located on the roof of the frog’s mouth between the internal nares are called

__________________ teeth.

vomerine

slide25

Gall bladder

Small sac located on the under the right lobe of the liver that stores bile.

TRUE or FALSE

Blood traveling to the lungs in the pulmonary arteries is HIGH in oxygen.

FALSEIt’s going to the lungs to pick up oxygen.

slide26

Kidneys

Main excretory organ in an ADULT frog

Process by which frogs lie dormant through the winter.

hibernation

slide27

Nictitating membrane

Match the part with its function:

Covers eye under water __________________

stores food for hibernation/estivation _______________

Coiled portion of small intestine ________________

between duodenum and large intestine

Pumps blood _______________

eardrum _____________

Fat bodies

ileum

ventricle

Tympanic membrane

slide28

Aorta

Largest artery leaving the heart

Tell one way frog circulation is different from a fish

Frogs: Fish:

3 chamber heart 2 chamber heart

2 loops 1 loop

slide29

metamorphosis

Gradual change in form which occurs during the life of an amphibian

This organ makes, stores, and processes red blood cells

spleen

slide30
Openings in the roof of the mouth that connect to the external nares (nostrils)

Internal nares

Ribbon-like structure located in the mesentery between the stomach and the upper intestine

pancreas

slide31
Name the 2 parts of the frog circulatory system that carry BOTH oxygenated and deoxygenated blood.

Ventricle and Conus Arteriosus

Process by which amphibians lie dormant through a hot, dry season.

estivation

slide32

With amplexus, sperm and eggs are released

at same time and in the same place so

it increases chance of fertilization

Explain how AMPLEXUS helps reproduction in frogs.

deuterostomes

Frogs are _____________________ that

deuterostomes protostomes means their blastopore becomes their _____________

mouth anus

anus

slide33

vertebrates

Frogs are _________________.

vertebrates invertebrates

Thyroxin is made by the _________________.

Thyroid gland

slide34

Kidneys & gills

Excretory organs in a TADPOLE

Tell one way adult frog circulation is like a fish

BOTH:

Closed circulation

have conus arteriosus & sinus venosus

ventricle pumps blood

have arteries, veins, & capillaries

slide35

Breaks down

FATS

LIVER

Breaks down PROTEINS

PANCREAS

Causes cells to

release stored glucose

PANCREAS

Causes cells to

store glucose

PANCREAS

THYROIDGLAND

Controls metamorphosis

slide36
The medulla oblongata controls

Higher thinking internal organs muscle coordination smell

Internal organs

The part of the systemic circulation in which blood circulates from the heart to the lungs and back to the heart is called _________________ circulation.

PULMONARY

slide37
Region of the frog brain which receives info from the eyes is the _______________ lobe

Optic

Number of loops in the circulatory system of

amphibians

2 loops;

one to lungs and back

one to body systems and back

slide38

Pulmonary artery

The blood vessel that carries blood from the heart to the lungs is the _______________

Hint: think about what circulation to the lungs is called and what blood vessels that leave the heart are called!

Organ which produces eggs

Ovary

slide39

Gullet

Opening to the digestive system in the back of the throat

The circulatory system in which blood flows from the heart to the body systems and back to the heart is the ________________ circulation.

Systemic

slide40

Maxillary

Teeth located along the upper jaw

Blood returns to the left atrium from the lungs in the _______________ __________.

Pulmonary veins

slide41

columella

Match the function with the body part

Bone between eardrum and inner ear _____________________

Controls higher thinking, learning, reasoning, etc. ______________________

Vessels that carry blood away from heart ________________

nostrils _________________

Teeth on roof of mouth _______________

Receives blood returning to heart from lungs ______________________

cerebrum

arteries

External nares

vomerine

Left atrium

slide42
Organ that produces sperm

Testes

Tube that carries eggs from the ovary to the cloaca.

Oviduct

slide43

LABEL THE PARTS OF THE CIRCULATORY SYSTEM

PULMONARY

HEPATIC

RENAL

CORONARY

SYSTEMIC

slide44
The portion of the brain closest to the spinal cord in a frog.

Medulla oblongata

Eardrum in a frog

Tympanic membrane

slide45
Structure where eggs are stored before being laid is the ______________

Uterus

Tube that carries eggs from the ovary to the cloaca.

Oviduct

slide46
These yellowish fingerlike structures store fat for hibernation and times with little food.

Fat bodies

slide48
Match the function with the body part

Controls motor coordination & balance _____________________

Opening to lungs ______________________

Controls body organs ________________

Eardrum _________________

Respiratory organ in tadpoles _______________

Receives blood returning to heart from body ______________________

cerebellum

glottis

Medulla oblongata

Tympanic membrane

gills

Sinus venosus

slide49

endocrine

The thyroid gland belongs to the

__________________ system.

During periods of extreme cold amphibians undergo a dormant time called ________________.

hibernation

slide51
Name the 3 body systems that share the cloaca exit cavity.

During hot, dry periods amphibians

can undergo a dormant time called

_________________.

Digestive, excretory, reproductive

estivation

slide52

liver

Match the function with the body part

Makes bile _____________________

Stores bile ______________________

Makes trypsin

& other digestive enzymes ________________

Protects the eye underwater ________________

Respiratory organ in tadpoles _______________

Receives sperm/eggs,

urine, & digestive waste _________________

Gall bladder

pancreas

Nictitating membrane

gills

cloaca

slide53

Small intestine

Match the function with the body part

Place where bile & trypsin are used _____________________

Upper part of small intestine ____________________

Coiled part of small intestine ________________

Absorbs nutrients ________________

Respiratory organ in adult frogs _____________ & __________

duodenum

ileum

Small intestine

Lungs skin

slide54

cutaneous

________________ respiration involves breathing through skin.

Adult amphibians release their nitrogen waste in the form of _______ which is diluted with water to make urine.

urea

slide55
Tell 2 things that have to change INSIDE a tadpole as it becomes an adult.
  • Switch from breathing with gills to breathing with lungs & skin
  • switch from excreting ammonia to urea
  • add a chamber to heart
  • add a loop to circulatory system
  • Switch excreting nitrogen waste through
  • gills & kidneys to just kidneys