Principles of Anatomy & Physiology

Discussions on The Human Body

i need help pronto/ asap/now?

i need to know the answers to these multiple choice questions the ones with the stars are what i think are correct

Question 1

What is the smallest structural and functional unit of the nervous system?

receptor

neuron*

organ

tissue

Question 2

When an action potential reaches the end of a neuron, it triggers the release of

dendrites.

neurotransmitters.*

sodium ions.

receptors.

Question 3

Neurons are categorized by the

amount of metabolic activity that takes place.

direction in which they carry impulses.*

number of dendrites that branch out.

number of impulses that they carry.

Question 4

The axon terminal

carry the message by way of action potential*

receive the message by the neurotransmitters

none of the choices

release neurotransmitters

Question 5

What is the function of neurotransmitters?

to transmit nerve impulses through dendrites

to stimulate the production of epinephrine

to transmit nerve impulses across synapses*

none of the above

Question 6

Which division(s) of the peripheral nervous system transmit(s) impulses from sense organs to the central nervous system?

motor division

spinal cord division

sensory division*

sensory and motor divisions

Question 7

What types of drugs slow down the activity of the central nervous system?

stimulants

depressants*

ecstasy

cocaine

Question 8

Alcohol does each of the following EXCEPT

stimulate heart rate*

slow reflexes

disrupt coordination

impair judgment

Question 9

Drugs that increase heart rate, blood pressure, and breathing rate are called

alcohol.

depressants.

opiates.

stimulants.*

Question 10

Dendrites

have myelin on them to speed up the signal-

carry the message to the axon

release neurotransmitters

receive the message*

Question 11

What is the function of the central nervous system?

to relay messages

to process information

to analyze information

all of the above*

Question 12

What begins when a neuron is stimulated by another neuron or by the environment?

a dendrite

a threshold

an action potential*

an impulse

Question 13

Which system coordinates the body’s response to changes in its internal and external environment?

excretory system

reproductive system

lymphatic system

nervous system*

Question 14

The synapse (synaptic cleft) is:

dendrites

axon

none of the above

area between neurons*

!health homework questions!?

for this section in health we are learning about the male and female reproductive system.this week is female and and have some homework health questions i need help on: ps there fill in the blank questions.so if u see the word WHAT thats a blank.
1.eggs are swept into the WHAT?
2.eggs are fertilized by WHAT?
3.the uterus is signaled by WHAT to maintain its thick lining.
4.a WHAT moves from the fallopian tube into the uterus.a WHAT? has then occured.
5.if a egg is not fertilized,the egg breaks down and moves to the WHAT and
WHAT and the lining of the uterus down.
6.then fluid passes out of te body through the WHAT during the WHAT.

thanxs it will really help

Why are parents so afraid to talk about sex?

I read so many questions on here from teens asking if they are pregnant. Half of them have never even had sex! They think humping with clothes on could get them pregnant. Where are they getting their information?! I think it’s a parents’ responsible to teach their children how the reproductive system works and how to stay safe. Honestly most parents were probably having sex in their teens too, so why are they so surprised when they find out their own kids are doing it? What iss the big deal about the ‘sex talk’ and why aren’t more parents explaining things?

Questions abot Biology, Reproduction. Help PLEASE!!?

Ive been given these questions can u please help!!!

In the male reproductive system, there are the following horomones:
1. Gonadotrophin releasing factor
2. Testosterone
3. Interstitial cell stimulating horomone
for these horomones identify whoch endocrine gland is responsible for teir release andwhat is the function in the male reproduction.

In the female reproductive system, there are the following horomones:
1. Gonadotrophin releasing factor
2. Folicle stimulating horomone
3. Oestrogen
4. Lutinising horomone
5. Progesterone
for these horomones identify whoch endocrine gland is responsible for their release and what is the function in the female reproduction.

Biology questions about plants?

I’m reading about this and i’m not getting the whole vascular non-vascular, sporophyte gametophyte, seed plant… here are my questions.

1) What are divisions of non-vascular and vascular plants? not what are they, just what does that mean?

2) What is the alternation of generations? how does it work?

3) What is Antheridia and Archegonia?

4) Why do seed plants have male and female reproductive systems? don’t they reproduce by dropping seeds?

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