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2 years ago

What enables the sperm to be guided to the ovum in order for fertilization to occur?

1 answer:

4 0

As long as a sperm cell is alive in the fallopian tube, it's capable of fertilizing an egg. If there's no egg in the fallopian tube, there's no chance of fertilization.
The fallopian tubes are about four inches (10 centimeters) long and transport the egg from the ovary to the uterus. They also provide sperm that make it that far with nutrients and a safe environment, the same kind the egg enjoys as it passes through. Of the millions of sperm cells that initially enter the cervix, there may be anywhere from one to a couple hundred that arrive at the fallopian tube

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Explain why a steam burn from gaseous water at 100 ∘c is worse than a water burn involving the same amount of liquid water at 10

Dimas [21]

burn effects like blisters are caused by heat, not temperature. So basically that steam at 100 C contains more heat than water at 100 C but More severe, burn effects come from the gaseous water than the steam.

hopefully this helps, and i deeply apologize if i got this wrong for you

5 0

2 years ago

1. How are passive and active prosthetic devices the same? (1 point)

salantis [7]

The similarity between passive and active prosthetic devices is: Both replace missing limbs.

A prosthetic device can be defined as a device that is designed and developed to artificially replace a missing part of the human body or to improve the function of a particular body part.

Some of the body parts that are artificially replaced with a prosthetic device are:

Limbs.

Tooth.

Eyes.

Palate.

Basically, there are two (2) main types of prosthetic devices and these include:

I. Active prosthetic device.

II. Passive prosthetic device.

In conclusion, both passive and active prosthetic devices are used to artificially replace missing limbs.

5 0

2 years ago

Which muscles move the arm

kompoz [17]

Answer:

1- common origin for muscles that move the arm

scapula (except latissimus dorsi and pectoralis major)

2- common insertion for muscles that move the arm

humerus (except latissimus dorsi and pectoralis major)

3- common innervation of muscles that move the arm

cervical nerves

4- coracobrachialis

origin: scapula

insertion: humerus

innervation: cervical nerve

action: adduction and flexion of shoulder

5- deltoid

origin: scapula

insertion: humerus

innervation: cervical nerve

action: abduction of shoulder

-anterior- flexion and medial rotation of shoulder

-posterior- extension and lateral rotation of shoulder

6- supraspinatus muscle

origin: scapula

insertion: humerus

innervation: cervical nerve

action: abduction at shoulder

7- infraspinatus muscle

origin: scapula

insertion: humerus

innervation: cervical nerve

action: lateral rotation of shoulder

8- subscapularis

origin: scapula

insertion: humerus

innervation: cervical nerve

action: medial rotation of the shoulder

9- teres major and minor

origin: scapula

insertion: humerus

innervation: cervical nerve

actions

-major: extension and medial rotation of shoulder

-minor: lateral rotation and adduction of shoulder

10- triceps brachii (long head)

origin: scapula

insertion: humerus

innervation: cervical nerve

action: extension at the elbow

11- latissimus dorsi

origin: spinous process T7-T12

insertion: intertubercular groove of humerus

innervation: cervical nerve

action: abduction and medial rotation of shoulder

12- pectoralis major

origin: clavicle and sternum

insertion: intertubercular groove of humerus

innervation: cervical nerve

action: flexion, extension, adduction, medially rotate arm at shoulder

13- origin of latissimus dorsi

spinous process C7-C12

14- insertion of latissimus dorsi

intertubercular groove of humerus

15- action of latissimus dorsi

abduction and medially rotate shoulder

16- origin of pectoralis major

clavicle and sternum

17- insertion of pectoralis major

intertubercular groove

18- action of pectoralis major

flexion, extension, medial rotation, adduction of shoulder

3 0

3 years ago

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What steps are state and local governments taking to reduce nicotine and tobacco use? Check all that apply.

never [62]

1, 3, and 4!

Hope this helps :)

8 0

2 years ago

Read 2 more answers

Determine an example of a social influence

Nutka1998 [239]

A 'Trend' is a large social influence if this is what you are talking about. Trends are something where one person does/wears it (usually a popular person everyone likes) and then everyone else starts doing it.

6 0

2 years ago

Read 2 more answers